Is anyone else having this problem. Open Band in a box, File / Open song.

I can make the Finder window size larger / smaller from the top or bottom of the window, but I can only make it larger not smaller horizontally.

This I found after my first post about the odd purpleish background colour showing in Title and Style which dylanw also found in the mixer window.
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MacBook Pro 2020 - Big Sur 11.4
BiaB UltraPak+ 2021 Mac, (503)
Yamaha SLG200N
Epiphone Les Paul Studio

Logic Pro X,
Xtra Styles 1 - 10. Loops-with-Style PAK 1 & 2. Multistyles PAK 1.