Odd flyout toolbar behavior

I have one toolbar that “behaves badly” when it is located on the bottom row. It takes a quarter of a second to fly out (pop upwards) and then “jumps” shortly after. The delay also corresponds more or less with the appearance of the tooltip - but this may be a red herring.

It does not jump if I move the button that creates the flyout to the top toolbar so that it drops down, but it does blink briefly. Other similar popup toolbars I have flying out from the lower toolbar row do not do this…

A side issue is that the position starts from the bottom of the Rhino window, not from the button location, which I would rather. This happens with all the popup toolbars I have in the bottom row. The upper row “dropdown” toolbars I have start from the button location and go downward.

Moved to Rhino category