TAdvComboBox focused on startup

I recently upgraded to Delphi 11 and the latest TMS controls. Several of my TAdvComboBox controls are now focused at startup. Any ideas how to ensure that they are unfocused on startup?

I have not seen this before and can't reproduce this. Normally only one control can have focus.
If a problem persists, can you isolate and send a sample source project with which this can be reproduced here?