Index: krita/ui/input/wintab/kis_tablet_support_win.cpp
===================================================================
--- krita/ui/input/wintab/kis_tablet_support_win.cpp
+++ krita/ui/input/wintab/kis_tablet_support_win.cpp
@@ -683,38 +683,22 @@
 
 bool KisTabletSupportWin::nativeEventFilter(const QByteArray &/*eventType*/, void *message, long *result)
 {
-    MSG *msg = static_cast<MSG*>(message);
     Q_UNUSED(result);
 
     static bool mouseEnteredFlag = false;
 
+    bool handled = false; // If we handle a tablet event, tell Qt we took care of it
+    MSG *msg = static_cast<MSG*>(message);
+
     switch(msg->message){
     case WT_CTXOPEN:
         qt_tablet_context = reinterpret_cast<HCTX>(msg->wParam);
+        handled = true;
         break;
     case WT_CTXCLOSE:
         qt_tablet_context = 0;
+        handled = true;
         break;
-    case WM_ACTIVATE: {
-        /**
-         * Workaround for a focus bug by Qt
-         *
-         * Looks like modal windows do not grab focus on Windows. The
-         * parent widget will still be regarded as a focusWidget()
-         * although it gets no events. So notify the pure parent that
-         * he is not in focus anymore.
-         */
-        QWidget *modalWidget = QApplication::activeModalWidget();
-        if (modalWidget) {
-            QWidget *focusWidget = QApplication::focusWidget();
-            if (focusWidget) {
-                bool active = msg->wParam == WA_ACTIVE || msg->wParam == WA_CLICKACTIVE;
-                QFocusEvent focusEvent(active ? QEvent::FocusIn : QEvent::FocusOut);
-                QApplication::sendEvent(focusWidget, &focusEvent);
-            }
-        }
-        break;
-    }
     case WM_MOUSELEAVE:
         mouseEnteredFlag = false;
         break;
@@ -734,27 +718,21 @@
                 tabletUpdateCursor(proximityBuffer.pkCursor);
             }
         }
+        handled = true;
         break;
     }
     case WT_PACKET: {
         Q_ASSERT(qt_tablet_context);
-
-        /**
-         * We eat WT_PACKET events.. We are bad!
-         *
-         * But we can do nothing, because the packets are removed from the
-         * WinTab queue by WTPacketsGet
-         */
-
         int nPackets;
         if ((nPackets = ptrWTPacketsGet(qt_tablet_context, QT_TABLET_NPACKETQSIZE, &globalPacketBuf))) {
             return translateTabletEvent(*msg, globalPacketBuf, nPackets);
         }
 
+        handled = true;
         break;
     }
     }
 
-    return false;
+    return handled;
 }