I see a refresh issue on theme switch. Parts of the map aren't drawn, text not displayed. View refreshes more or less on map move. Definitely on zoom in/out.
I was testing with Germany_South_OAM at ZL15.
47.7144,11.07496
Edit: happens also on automatic vector map switching
I was testing with Germany_South_OAM at ZL15.
47.7144,11.07496
Edit: happens also on automatic vector map switching