fix: don't ignore mousePressEvent in SplitInput (#4177)

Co-authored-by: Felanbird <41973452+Felanbird@users.noreply.github.com>
Co-authored-by: pajlada <rasmus.karlsson@pajlada.com>
Fixes https://github.com/Chatterino/chatterino2/issues/3844

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Unversioned
 
 - Bugfix: Fixed being unable to see the usercard of VIPs who have Asian language display names. (#4174)
+- Bugfix: Fixed the wrong right-click menu showing in the chat input box. (#4177)
 
 ## 2.4.0-beta
 

src/widgets/splits/SplitInput.cpp

@@ -648,6 +648,16 @@ void SplitInput::installKeyPressedEvent()
     });
 }
 
+void SplitInput::mousePressEvent(QMouseEvent *event)
+{
+    if (this->hidden)
+    {
+        BaseWidget::mousePressEvent(event);
+    }
+    // else, don't call QWidget::mousePressEvent,
+    // which will call event->ignore()
+}
+
 void SplitInput::onTextChanged()
 {
     this->updateCompletionPopup();

src/widgets/splits/SplitInput.hpp

@@ -87,6 +87,8 @@ protected:
     void paintEvent(QPaintEvent * /*event*/) override;
     void resizeEvent(QResizeEvent * /*event*/) override;
 
+    void mousePressEvent(QMouseEvent *event) override;
+
     virtual void giveFocus(Qt::FocusReason reason);
 
     QString handleSendMessage(std::vector<QString> &arguments);