Hello,
I’ve got some UI issues in vertical view - which I think is more natural when comming to write notes by pen on iPad. Many buttons or selection lists are inivisible or (maby worse) need to be scrolled horizontally. This can be expierienced in adding new player with instrument (button to approve not possible to reach) on changing score settings.
Dorico for iPad is definitely optimised for use in landscape orientation for the time being, and you are recommended to use the device in that orientation at the moment.