Time Signature Properties Panel unusable because it's height can't be ajusted
select a time signature
right-click it and select properties
A panel pops up but you cant click on the "ok" button because it is just below the screen bottom limit
you try to ajust the height of the panel manually
As long as you press the left side of the mouse the panel migrates quickly downwards and past the bottom limit of the screen, at which point you can't do anything except to close that window and try again.