Fix resize glitches while paused

src/qt/qt_openglrenderer.cpp

@@ -1223,6 +1223,9 @@ OpenGLRenderer::resizeEvent(QResizeEvent *event)
         destination.y(),
         destination.width(),
         destination.height());
+    
+    if (video_framerate == -1)
+        render();
 }
 
 void

src/qt/qt_softwarerenderer.cpp

@@ -105,6 +105,7 @@ SoftwareRenderer::resizeEvent(QResizeEvent *event)
 #else
     QWindow::resizeEvent(event);
     m_backingStore->resize(event->size());
+    render();
 #endif
 }