diff --git a/x-pack/plugins/lens/public/editor_frame_service/editor_frame/config_panel/dimension_popover.tsx b/x-pack/plugins/lens/public/editor_frame_service/editor_frame/config_panel/dimension_popover.tsx
index 6d54e0d84d101..91b4b70b3f898 100644
--- a/x-pack/plugins/lens/public/editor_frame_service/editor_frame/config_panel/dimension_popover.tsx
+++ b/x-pack/plugins/lens/public/editor_frame_service/editor_frame/config_panel/dimension_popover.tsx
@@ -59,6 +59,7 @@ export function DimensionPopover({
           <EuiTitle size="xs">
             <EuiButtonEmpty
               onClick={closeFlyout}
+              data-test-subj="lnsDimensionPopoverFlyoutTitle"
               id="lnsDimensionPopoverFlyoutTitle"
               iconType="sortLeft"
               flush="left"
diff --git a/x-pack/test/functional/page_objects/lens_page.ts b/x-pack/test/functional/page_objects/lens_page.ts
index acba3fa472b1a..06cf1c943622f 100644
--- a/x-pack/test/functional/page_objects/lens_page.ts
+++ b/x-pack/test/functional/page_objects/lens_page.ts
@@ -105,6 +105,7 @@ export function LensPageProvider({ getService, getPageObjects }: FtrProviderCont
       const target = await testSubjects.find('indexPattern-dimension-field');
       await comboBox.openOptionsList(target);
       await comboBox.setElement(target, opts.field);
+      await testSubjects.click('lns-indexPatternDimension-flyoutTitle');
     },
 
     /**