So, if you have a menu button and you have buttons inside of that menu button, when you right click the "menu button" to convert it into a "menu", it creates a new button inside the menu, copying the icon image, label, label position, description, function, etc etc etc.
However, I noticed that the label position becomes linked. So, if you want the buttons inside the menu to have a different label position than the menu itself, you have to duplicate the newly created button, change the label position, then delete the original button.
So, the steps to recreate would be:
- Start with a menu button with 1 or more buttons already inside of it
- Make sure that the menu button has a label and a position of "Below"
- right click the menu button and convert it into a menu
- open the menu
- right click the newly created button and edit
- change label position to "right"
- watch as the label position of both the button and the menu are changed simultaneously
- Bonus bug: The Label name itself is also linked, so if you change the Label Name, that is propagated to the Menu as well.
- Bonus Bug: The icon is also linked, so changing that also changes the Menu
I think a lot more is also being linked like, text color and background, but those actually behave strangely. For instance, if you change the "buttons" text color and background, it affects the "menu", not the button.
WEIRD! 
It seems to me like, converting a menu button into a menu is like black magic and very prone to things going wrong.