The solution:
traitOverrides.horizontalSizeClass = .compact
does seem to work on iPads. However, it does not seem to work for iPad apps running on MacOS unfortunately.
On MacOS, it will show both the old traditional bottom tabbar, as well as the new one on top. And in my case at least, they can get out of sync with each other which is a mess.
cbapple
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
User for