Should fix the issue #2117

qutebrowser/browser/webengine/webenginetab.py

@@ -472,7 +472,6 @@ class WebEngineTab(browsertab.AbstractTab):
         # init js stuff
         self._init_js()
         self._child_event_filter = None
-        self.needs_qtbug54419_workaround = False
 
     def _init_js(self):
         js_code = '\n'.join([

qutebrowser/browser/webkit/webkittab.py

@@ -607,6 +607,7 @@ class WebKitTab(browsertab.AbstractTab):
         self._connect_signals()
         self.zoom.set_default()
         self.backend = usertypes.Backend.QtWebKit
+        self.needs_qtbug54419_workaround = False
 
     def _install_event_filter(self):
         self._widget.installEventFilter(self._mouse_event_filter)