[*] cant be arsed to debug this. doesnt seem to be event loop issue. might still be an au related issue. either way, seems like an issue for the qt company to deal with. i dont give nearly enough of a fuck to continue debugging why these dirty areas arent being updated until the window is redrawn/lost focus/etc.

Change-Id: I5f13075f7beaf8007de16ae4af4281090449b874

src/widgets/itemviews/qheaderview.cpp

@@ -890,6 +890,8 @@ void QHeaderView::resizeSection(int logical, int size)
 
     d->viewport->update(r.normalized());
     emit sectionResized(logical, oldSize, size);
+
+    parent->repaint();
 }
 
 /*!