am da33d0d: Merge change 1424 into donut

Merge commit 'da33d0d139531ff184a1a339b734de00f1cc0743'

* commit 'da33d0d139531ff184a1a339b734de00f1cc0743':
  Fixes 1844680. Interrupted scrolling could lead to rendering artifacts. The ListView was invalidating itself in opaque mode but before the drawing could happen, it was getting rid of its scrolling cache, thus becoming translucent again.