fix: hide tooltip on window leave event

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unversioned
 
+- Bugfix: Fixed split tooltip getting stuck in some cases. (#5309)
+
 ## 2.5.0-beta.1
 
 - Major: Twitch follower emotes can now be correctly tabbed in other channels when you are subscribed to the channel the emote is from. (#4922)

src/widgets/BaseWindow.cpp

@@ -527,6 +527,7 @@ void BaseWindow::changeEvent(QEvent *)
 
 void BaseWindow::leaveEvent(QEvent *)
 {
+    this->leaving.invoke();
 }
 
 void BaseWindow::moveTo(QPoint point, widgets::BoundsChecking mode)

src/widgets/BaseWindow.hpp

@@ -85,6 +85,7 @@ class BaseWindow : public BaseWidget
     void setTopMost(bool topMost);
 
     pajlada::Signals::NoArgSignal closing;
+    pajlada::Signals::NoArgSignal leaving;
 
     static bool supportsCustomWindowFrame();
 

src/widgets/splits/SplitHeader.cpp

@@ -257,6 +257,20 @@ SplitHeader::SplitHeader(Split *split)
     getSettings()->headerStreamTitle.connect(_, this->managedConnections_);
     getSettings()->headerGame.connect(_, this->managedConnections_);
     getSettings()->headerUptime.connect(_, this->managedConnections_);
+
+    auto *window = dynamic_cast<BaseWindow *>(this->window());
+    if (window)
+    {
+        // Hack: In some cases Qt doesn't send the leaveEvent the "actual" last mouse receiver.
+        // This can happen when quickly moving the mouse out of the window and right clicking.
+        // To prevent the tooltip from getting stuck, we use the window's leaveEvent.
+        this->managedConnections_.managedConnect(window->leaving, [this] {
+            if (this->tooltipWidget_->isVisible())
+            {
+                this->tooltipWidget_->hide();
+            }
+        });
+    }
 }
 
 void SplitHeader::initializeLayout()