I've never seen this behavior. AFAIK, the width of the F&S dialog is fixed ... it should not be possible to make it wider.
Have you modified your registry at all, or installed some 3rd party program that modifies dialogs in other programs perhaps?
Might have to reinstall AC...
Karl
One of the forum moderators
AC 28 USA and earlier • macOS Sonoma 14.7.1, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB