I'm having an issue with the top ribbon in my add-in. This problem started in v3.4. I have two "middle" size bottons and a checkbox that appeared one on top of the other (which is what I want). To the left of the buttons I have a separator. Starting in v3.4, the middle size buttons with a separator to their left now appear as large buttons. I've done a bunch of playing around with the code, and it's definitely the separator that is causing the problem. This seems like a bug starting in v3.4 (and is still there in v3.5). See attached picture to see the change. Anyone have a solution for this?
Daml code:
<button refID="EditSelectButton" size="middle" separator="true"/>
<button refID="OpenEditTableButton" size="middle" />
<checkBox refID="IgnoreChildrenCheckbox" />