I'm not sure what I'm doing wrong I've got two Split Buttons in the Ribbon, I was able to set the visibility of one of them but not the other. I can select the correct visibility as if it's going to stick it adds the (pending) to the button.. but when I click accept it just reverts back to the old state. I don't understand what could be different.
This one works.
This one doesn't.
.dnglib File
Kodiak_v10.dgnlib
I was able to reproduce the issue you are seeing and will file a defect.
I was able to find a workaround for this. If you change the size of the button along with changing its visibility the changes made to visibility are recognized. You can then change the button size back to the one you would like.
Answer Verified By: Grant Wood