fix qt float int regression

qtgui/cursor.py

@@ -154,7 +154,7 @@ class Playhead(QtWidgets.QGraphicsLineItem):
             cursorViewPosX = scenePos.x() #the cursor position in View coordinates
             width = self.parentScoreScene.parentView.geometry().width()
             if cursorViewPosX <= 0 or cursorViewPosX >= width: #"pageflip"
-                self.parentScoreScene.parentView.horizontalScrollBar().setValue(x * constantsAndConfigs.zoomFactor)
+                self.parentScoreScene.parentView.horizontalScrollBar().setValue(int(x * constantsAndConfigs.zoomFactor))
 
 
     def _Deprecated__ScrollingVariant___setCursorPosition(self, tickindex):