With https://code.launchpad.net/~aacid/unity8/category_view_invisible_in_preview_mode/+merge/231844 this doesn't happen anymore, the underlying bug is most probably somewhere in Qt, but with this the listview is more stable and thus doesn't trigger that issue.
With https:/ /code.launchpad .net/~aacid/ unity8/ category_ view_invisible_ in_preview_ mode/+merge/ 231844 this doesn't happen anymore, the underlying bug is most probably somewhere in Qt, but with this the listview is more stable and thus doesn't trigger that issue.