Portal on Popover Button in a portal won't stay put
I have a popover button in a portal that I want to display a Portal to select a value. The problem is when I draw the portal within the popout area of the button, it drops to behind the button instead of becoming part of the button. what do I need to do?
If the popover button itself is located inside a portal row, this cannot be done as it is a form of putting a portal inside of a portal.
A portal will also fall out of a popover (or a slide control) if the portal is not fully contained within the borders of the enclosing control. Just "nudging" a portal a few pixels too far can cause such a "falling out".