diff --git a/web/package/agama-web-ui.changes b/web/package/agama-web-ui.changes
index 24f7d653b3..20d8c9de15 100644
--- a/web/package/agama-web-ui.changes
+++ b/web/package/agama-web-ui.changes
@@ -1,3 +1,13 @@
+-------------------------------------------------------------------
+Tue Feb 25 13:08:43 UTC 2025 - Imobach Gonzalez Sosa <igonzalezsosa@suse.com>
+
+- Use the backend's language as fallback, ignoring the browser's one
+  It reduces the chances to produce unwanted side-effects when connecting
+  to the web user interface (gh#agama-project/agama#2071).
+- Do not block when connecting during system installation.
+- Make some small fixes/improvements to the overview, localization
+  and software pages markup.
+
 -------------------------------------------------------------------
 Tue Feb 25 12:36:50 UTC 2025 - Ancor Gonzalez Sosa <ancor@suse.com>
 
diff --git a/web/src/App.tsx b/web/src/App.tsx
index 52cdc7e723..d53fa8ebb1 100644
--- a/web/src/App.tsx
+++ b/web/src/App.tsx
@@ -41,7 +41,9 @@ function App() {
   const location = useLocation();
   const { isBusy, phase } = useInstallerStatus({ suspense: true });
   const { connected, error } = useInstallerClientStatus();
-  const { selectedProduct, products } = useProduct({ suspense: true });
+  const { selectedProduct, products } = useProduct({
+    suspense: phase !== InstallationPhase.Install,
+  });
   const { language } = useInstallerL10n();
   useL10nConfigChanges();
   useProductChanges();
diff --git a/web/src/components/l10n/KeyboardSelection.tsx b/web/src/components/l10n/KeyboardSelection.tsx
index 9ad48eb1d9..febcd26890 100644
--- a/web/src/components/l10n/KeyboardSelection.tsx
+++ b/web/src/components/l10n/KeyboardSelection.tsx
@@ -21,12 +21,11 @@
  */
 
 import React, { useState } from "react";
-import { Content, Form, FormGroup, Radio } from "@patternfly/react-core";
+import { Content, Flex, Form, FormGroup, Radio } from "@patternfly/react-core";
 import { useNavigate } from "react-router-dom";
 import { ListSearch, Page } from "~/components/core";
 import { _ } from "~/i18n";
 import { useConfigMutation, useL10n } from "~/queries/l10n";
-import textStyles from "@patternfly/react-styles/css/utilities/Text/text";
 
 // TODO: Add documentation
 // TODO: Evaluate if worth it extracting the selector
@@ -55,12 +54,10 @@ export default function KeyboardSelection() {
         name="keymap"
         onChange={() => setSelected(id)}
         label={
-          <>
-            <span className={`${textStyles.fontSizeLg}`}>
-              <b>{name}</b>
-            </span>{" "}
+          <Flex columnGap={{ default: "columnGapSm" }}>
+            <Content isEditorial>{name}</Content>
             <Content component="small">{id}</Content>
-          </>
+          </Flex>
         }
         value={id}
         isChecked={id === selected}
@@ -80,11 +77,9 @@ export default function KeyboardSelection() {
       </Page.Header>
 
       <Page.Content>
-        <Page.Section>
-          <Form id="keymapSelection" onSubmit={onSubmit}>
-            <FormGroup isStack>{keymapsList}</FormGroup>
-          </Form>
-        </Page.Section>
+        <Form id="keymapSelection" onSubmit={onSubmit}>
+          <FormGroup isStack>{keymapsList}</FormGroup>
+        </Form>
       </Page.Content>
 
       <Page.Actions>
diff --git a/web/src/components/l10n/LocaleSelection.tsx b/web/src/components/l10n/LocaleSelection.tsx
index d75e6897f7..08e1219984 100644
--- a/web/src/components/l10n/LocaleSelection.tsx
+++ b/web/src/components/l10n/LocaleSelection.tsx
@@ -54,15 +54,9 @@ export default function LocaleSelection() {
         onChange={() => setSelected(id)}
         label={
           <Flex gap={{ default: "gapSm" }}>
-            <span className={textStyles.fontSizeLg}>
-              <b>{name}</b>
-            </span>
-            <span className={[textStyles.fontSizeMd, textStyles.textColorPlaceholder].join(" ")}>
-              {territory}
-            </span>
-            <span className={[textStyles.fontSizeXs, textStyles.textColorSubtle].join(" ")}>
-              {id}
-            </span>
+            <Content isEditorial>{name}</Content>
+            <Content className={`${textStyles.textColorPlaceholder}`}>{territory}</Content>
+            <Content className={`${textStyles.textColorSubtle}`}>{id}</Content>
           </Flex>
         }
         value={id}
@@ -83,11 +77,9 @@ export default function LocaleSelection() {
       </Page.Header>
 
       <Page.Content>
-        <Page.Section>
-          <Form id="localeSelection" onSubmit={onSubmit}>
-            <FormGroup isStack>{localesList}</FormGroup>
-          </Form>
-        </Page.Section>
+        <Form id="localeSelection" onSubmit={onSubmit}>
+          <FormGroup isStack>{localesList}</FormGroup>
+        </Form>
       </Page.Content>
 
       <Page.Actions>
diff --git a/web/src/components/l10n/TimezoneSelection.tsx b/web/src/components/l10n/TimezoneSelection.tsx
index 54d5d0522c..61db7b4414 100644
--- a/web/src/components/l10n/TimezoneSelection.tsx
+++ b/web/src/components/l10n/TimezoneSelection.tsx
@@ -21,13 +21,13 @@
  */
 
 import React, { useState } from "react";
-import { Content, Divider, Flex, Form, FormGroup, Radio } from "@patternfly/react-core";
+import { Content, Flex, Form, FormGroup, Radio } from "@patternfly/react-core";
 import { useNavigate } from "react-router-dom";
 import { ListSearch, Page } from "~/components/core";
 import { timezoneTime } from "~/utils";
 import { useConfigMutation, useL10n } from "~/queries/l10n";
 import { Timezone } from "~/types/l10n";
-import textStyles from "@patternfly/react-styles/css/utilities/Text/text";
+import spacingStyles from "@patternfly/react-styles/css/utilities/Spacing/spacing";
 import { _ } from "~/i18n";
 
 type TimezoneWithDetails = Timezone & { details: string };
@@ -89,18 +89,17 @@ export default function TimezoneSelection() {
           name="timezone"
           onChange={() => setSelected(id)}
           label={
-            <>
-              <span className={`${textStyles.fontSizeLg}`}>
-                <b>{parts.join("-")}</b>
-              </span>{" "}
+            <Flex columnGap={{ default: "columnGapSm" }}>
+              <Content isEditorial className={`${spacingStyles.m_0}`}>
+                {parts.join("-")}
+              </Content>
               <Content component="small">{country}</Content>
-            </>
+            </Flex>
           }
           description={
-            <Flex columnGap={{ default: "columnGapXs" }}>
+            <Flex columnGap={{ default: "columnGapSm" }}>
               <Content component="small">{timezoneTime(id, date) || ""}</Content>
-              <Divider orientation={{ default: "vertical" }} />
-              <div>{details}</div>
+              <Content>{details}</Content>
             </Flex>
           }
           value={id}
@@ -126,11 +125,9 @@ export default function TimezoneSelection() {
       </Page.Header>
 
       <Page.Content>
-        <Page.Section>
-          <Form id="timezoneSelection" onSubmit={onSubmit}>
-            <FormGroup isStack>{timezonesList}</FormGroup>
-          </Form>
-        </Page.Section>
+        <Form id="timezoneSelection" onSubmit={onSubmit}>
+          <FormGroup isStack>{timezonesList}</FormGroup>
+        </Form>
       </Page.Content>
 
       <Page.Actions>
diff --git a/web/src/components/layout/Layout.tsx b/web/src/components/layout/Layout.tsx
index df901d97b9..27239170cd 100644
--- a/web/src/components/layout/Layout.tsx
+++ b/web/src/components/layout/Layout.tsx
@@ -74,13 +74,10 @@ const Layout = ({
     mountSidebar && setIsSidebarOpen(newWindowSize >= agamaWidthBreakpoints.lg);
   };
 
-  const pageProps: Omit<PageProps, keyof React.HTMLProps<HTMLDivElement>> = {
-    isManagedSidebar: true,
-  };
+  const pageProps: Omit<PageProps, keyof React.HTMLProps<HTMLDivElement>> = {};
 
   if (mountSidebar) {
-    pageProps.sidebar = <Sidebar isManagedSidebar={false} isSidebarOpen={isSidebarOpen} />;
-    pageProps.isManagedSidebar = false;
+    pageProps.sidebar = <Sidebar isSidebarOpen={isSidebarOpen} />;
   }
   if (mountHeader) {
     pageProps.masthead = (
diff --git a/web/src/components/overview/OverviewPage.tsx b/web/src/components/overview/OverviewPage.tsx
index 052c19a7f4..0852b55ac6 100644
--- a/web/src/components/overview/OverviewPage.tsx
+++ b/web/src/components/overview/OverviewPage.tsx
@@ -38,18 +38,16 @@ export default function OverviewPage() {
       <Page.Content>
         <Grid hasGutter>
           <GridItem sm={12}>
-            <Page.Section
-              aria-label={_("Overview")}
-              description={_(
-                "These are the most relevant installation settings. Feel free to browse the sections in the menu for further details.",
-              )}
-            >
-              <Stack hasGutter>
-                <L10nSection />
-                <StorageSection />
-                <SoftwareSection />
-              </Stack>
-            </Page.Section>
+            <Stack hasGutter>
+              <Content>
+                {_(
+                  "These are the most relevant installation settings. Feel free to browse the sections in the menu for further details.",
+                )}
+              </Content>
+              <L10nSection />
+              <StorageSection />
+              <SoftwareSection />
+            </Stack>
           </GridItem>
         </Grid>
       </Page.Content>
diff --git a/web/src/components/software/SoftwarePage.tsx b/web/src/components/software/SoftwarePage.tsx
index 9c4c66b1a8..a770a649e9 100644
--- a/web/src/components/software/SoftwarePage.tsx
+++ b/web/src/components/software/SoftwarePage.tsx
@@ -173,7 +173,7 @@ function SoftwarePage(): React.ReactNode {
           </GridItem>
           {proposal.size && (
             <GridItem sm={12} xl={6}>
-              <Page.Section>
+              <Page.Section aria-label={_("Used space")}>
                 <UsedSize size={proposal.size} />
               </Page.Section>
             </GridItem>
diff --git a/web/src/context/installerL10n.test.tsx b/web/src/context/installerL10n.test.tsx
index b8f3153090..3fc32e88d4 100644
--- a/web/src/context/installerL10n.test.tsx
+++ b/web/src/context/installerL10n.test.tsx
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) [2023] SUSE LLC
+ * Copyright (c) [2023-2025] SUSE LLC
  *
  * All Rights Reserved.
  *
@@ -120,37 +120,6 @@ describe("InstallerL10nProvider", () => {
       });
     });
 
-    describe("when the language is set to an unsupported language", () => {
-      beforeEach(() => {
-        document.cookie = "agamaLang=de-DE; path=/;";
-        mockFetchConfigFn.mockResolvedValue({ uiLocale: "de_DE.UTF-8" });
-      });
-
-      it("uses the first supported language from the browser", async () => {
-        render(
-          <InstallerClientProvider client={client}>
-            <InstallerL10nProvider>
-              <TranslatedContent />
-            </InstallerL10nProvider>
-          </InstallerClientProvider>,
-        );
-
-        await waitFor(() => expect(utils.locationReload).toHaveBeenCalled());
-
-        // renders again after reloading
-        render(
-          <InstallerClientProvider client={client}>
-            <InstallerL10nProvider>
-              <TranslatedContent />
-            </InstallerL10nProvider>
-          </InstallerClientProvider>,
-        );
-
-        await waitFor(() => screen.getByText("hola"));
-        expect(mockUpdateConfigFn).toHaveBeenCalledWith({ uiLocale: "es_ES.UTF-8" });
-      });
-    });
-
     describe("when the language is not set", () => {
       beforeEach(() => {
         // Ensure both, UI and backend mock languages, are in sync since
@@ -159,7 +128,7 @@ describe("InstallerL10nProvider", () => {
         mockFetchConfigFn.mockResolvedValue({ uiLocale: "es_ES.UTF-8" });
       });
 
-      it("sets the preferred language from browser and reloads", async () => {
+      it("sets the language from backend", async () => {
         render(
           <InstallerClientProvider client={client}>
             <InstallerL10nProvider>
@@ -180,34 +149,6 @@ describe("InstallerL10nProvider", () => {
         );
         await waitFor(() => screen.getByText("hola"));
       });
-
-      describe("when the browser language does not contain the full locale", () => {
-        beforeEach(() => {
-          jest.spyOn(window.navigator, "languages", "get").mockReturnValue(["es", "cs-CZ"]);
-        });
-
-        it("sets the first which language matches", async () => {
-          render(
-            <InstallerClientProvider client={client}>
-              <InstallerL10nProvider>
-                <TranslatedContent />
-              </InstallerL10nProvider>
-            </InstallerClientProvider>,
-          );
-
-          await waitFor(() => expect(utils.locationReload).toHaveBeenCalled());
-
-          // renders again after reloading
-          render(
-            <InstallerClientProvider client={client}>
-              <InstallerL10nProvider>
-                <TranslatedContent />
-              </InstallerL10nProvider>
-            </InstallerClientProvider>,
-          );
-          await waitFor(() => screen.getByText("hola!"));
-        });
-      });
     });
   });
 
diff --git a/web/src/context/installerL10n.tsx b/web/src/context/installerL10n.tsx
index a01a320099..e7f8127b73 100644
--- a/web/src/context/installerL10n.tsx
+++ b/web/src/context/installerL10n.tsx
@@ -134,6 +134,16 @@ function languageToLocale(language: string): string {
   return `${locale}.UTF-8`;
 }
 
+/**
+ * Returns the language tag from the backend.
+ *
+ * @return Language tag from the backend locale.
+ */
+async function languageFromBackend(): Promise<string> {
+  const config = await fetchConfig();
+  return languageFromLocale(config.uiLocale);
+}
+
 /**
  * Returns the first supported language from the given list.
  *
@@ -224,14 +234,19 @@ async function loadTranslations(locale: string) {
  *
  * @see useInstallerL10n
  */
-function InstallerL10nProvider({ children }: { children?: React.ReactNode }) {
+function InstallerL10nProvider({
+  initialLanguage,
+  children,
+}: {
+  initialLanguage?: string;
+  children?: React.ReactNode;
+}) {
   const { connected } = useInstallerClientStatus();
-  const [language, setLanguage] = useState(undefined);
+  const [language, setLanguage] = useState(initialLanguage);
   const [keymap, setKeymap] = useState(undefined);
 
   const syncBackendLanguage = useCallback(async () => {
-    const config = await fetchConfig();
-    const backendLanguage = languageFromLocale(config.uiLocale);
+    const backendLanguage = await languageFromBackend();
     if (backendLanguage === language) return;
 
     // FIXME: fallback to en-US if the language is not supported.
@@ -240,7 +255,7 @@ function InstallerL10nProvider({ children }: { children?: React.ReactNode }) {
 
   const changeLanguage = useCallback(
     async (lang?: string) => {
-      const wanted = lang || languageFromQuery();
+      const wanted = lang || languageFromQuery() || (await languageFromBackend());
 
       // Just for development purposes
       if (wanted === "xx" || wanted === "xx-XX") {
@@ -253,7 +268,6 @@ function InstallerL10nProvider({ children }: { children?: React.ReactNode }) {
         wanted,
         wanted?.split("-")[0], // fallback to the language (e.g., "es" for "es-AR")
         agamaLanguage(),
-        ...navigator.languages,
       ].filter((l) => l);
       const newLanguage = findSupportedLanguage(candidateLanguages) || "en-US";
       const mustReload = storeAgamaLanguage(newLanguage);
diff --git a/web/src/queries/software.ts b/web/src/queries/software.ts
index 34710f40fa..71d3aa8c66 100644
--- a/web/src/queries/software.ts
+++ b/web/src/queries/software.ts
@@ -197,7 +197,10 @@ const useProduct = (
   }) as [{ data: string; isPending: boolean }, { data: Product[]; isPending: boolean }];
 
   if (isSelectedPending || isProductsPending) {
-    return {};
+    return {
+      products: [],
+      selectedProduct: undefined,
+    };
   }
 
   const selectedProduct = products.find((p: Product) => p.id === selected);
diff --git a/web/src/test-utils.tsx b/web/src/test-utils.tsx
index 1cdf7db152..b0f36e8ee8 100644
--- a/web/src/test-utils.tsx
+++ b/web/src/test-utils.tsx
@@ -114,7 +114,7 @@ const Providers = ({ children, withL10n }) => {
   if (withL10n) {
     return (
       <InstallerClientProvider client={client}>
-        <InstallerL10nProvider>{children}</InstallerL10nProvider>
+        <InstallerL10nProvider initialLanguage="en-US">{children}</InstallerL10nProvider>
       </InstallerClientProvider>
     );
   }