Hmm, that’s a weird one.
The fact that even after reverting to the previous version the problem remains, means that this is probably something else.
What I can do, is add a few debug prints in the logic that controls when the UI is shown. Then you can enable WordPress logging and see what’s going on.
I will do this soon and let you know.
In the meantime, please try with some plugins disabled, particularly CMB2 if you have it installed, and tell me please if you see any difference.
Finally, the ids and classes that you found in your console should have some context. Is this part of an error you see? How come this information is in your console? If possible can you show me a screenshot of where you found this information?
with regards