fix(macos): check selection in cmd+backspace (#6469)

CHANGELOG.md

@@ -8,6 +8,7 @@
 - Bugfix: Fixed flickering tooltips on Wayland when the mouse cursor is over them. (#6451)
 - Bugfix: Fixed `c2.Channel` comparing `false` to the same channel. (#6456)
 - Bugfix: Fixed an issue where the moderation icon was missing from the Moderation tab. (#6457)
+- Bugfix: Fixed <kbd>CMD</kbd>+<kbd>Backspace</kbd> not working in the input on macOS if there was a selection. (#6469)
 - Dev: Added documentation for WebSockets to `wip-plugins.md`. (#6432)
 - Dev: Enable the hardened runtime on macOS. (#6467)
 

src/widgets/helper/ResizingTextEdit.cpp

@@ -136,7 +136,11 @@ void ResizingTextEdit::keyPressEvent(QKeyEvent *event)
         (event->key() == Qt::Key_Backspace))
     {
         QTextCursor cursor = this->textCursor();
-        cursor.movePosition(QTextCursor::StartOfLine, QTextCursor::KeepAnchor);
+        if (!cursor.hasSelection())
+        {
+            cursor.movePosition(QTextCursor::StartOfLine,
+                                QTextCursor::KeepAnchor);
+        }
         cursor.removeSelectedText();
         this->setTextCursor(cursor);
         return;