[16.1.0] UI elements lost

[pmaier1]

While I really appreciate the new rotation feature 👌 it seems that some UI elements have been lost between 16.0.2 and 16.1.0. See the screenshots below, the arrows for switching to the next or previous picture and the "X" to leave the view are missing.

16.0.2

16.1.0

Tested on Server 10.0.8. Any further info needed?

@DeepDiver1975

[pmaier1]

Originated due to an issue with theming. Sorry for the noise.