Fix issue in combo box

[axpoems]

Steps to repro:

1. Create a new profile in User Options > Create new profile
2. Set app window to full screen
3. Click on the menu to choose profile

Expected: The arrow in the combo box should point to the user selection menu.

[axpoems]

@HenrikJannsen you can assign this to me - I will implement a revamp of the combo box.