May I enquire as to how the position of the CommandBar Overflow area (when the 'see more' ellipsis button is clicked) may be changed to reside below the CommandBar (rather than above it) when the CommandBar control is positioned at the bottom of the page?
Thanks.
After testing my code, I derived a potential way to resolve this problem as follows:
You'd need to encapsulate the XAML code for the CommandBar within a RelativePanel, then set the CommandBar height to the required dimension and align it with respect to the bottom of the said Panel.