I was creating a new project on iPad. (Pro 12.9", M1, iOS 16.1) The project was created as empty, then added a Choir SATB player. I has 3/4 time with a 1 beat pickup. So I used the pallet to set the time signature to 3/4, checked the “Pick-up bar of:” checkbox, then tapped the menu to select 1 beat (instead of the 1/2 default). At this point, Dorico would hang without displaying the menu, every single time I tried.
I tried creating another new project, force quitting Dorico, and even restarting the iPad. The only way I was able to continue was to to use the shift-B popover to use the text entry method.