Capital umlauts impossible when using Swiss keyboard

The Swiss keyboard apparently has keys for ö, ä and ü. When you use shift it turns into é à and è keys, so I understand that to make a Ö, Ä or Ü you use the caps lock.

However in Qt 5 an umlaut key just produces the lower case umlaut regardless of caps lock state (shift key works as expected.)

This was reported by a user and I was able to reproduce it in Qt 5, including the basic lineedit example. In Qt 4 applications it works as expected.