It’s hard to know if this is a bug or a scenario in need of a guardrail.
I’ve got a form making a lot of use of TabPanelObjects and it’s working marvelously. One thing I run into continously is that while editing the form in GraphicsMode I often click on objects in the panel and edit them as well, sometimes extensively. Going back into data mode the panel performs according to the changes until I click to another panel. At that point, the edited panel reverts to the settings that were current the last time I edited the panel in its own separate window. Changes made in the “parent” form are lost.
Either that editing should be retained or not be permitted in a panel unless it is in the panel form itself.