Excel Window Resize from Bottom Right Very Slow. Others OK.

I am running Excel 365 64 Bit v16.0.17328.20550 on Windows 11 Surface Pro 9 machine.  When I try to change the windows size in Excel by dragging the bottom right corner and resizing diagonally Excel is painfully slow to resize and redraw the window, noticeably lagging behind the mouse movement.  The odd thing is if I resize the same window diagonally using any of the other 3 corners it works fine.  If I resize just horziontally or just vertically by dragging one of the edges it is also ok.....only the bottom right corner causes issues which per Murphy's Law is the one I always use.

Seems very odd but has anyone else seen this issue?