Same here, I didn’t anticipate there being a problem like the 64 bit upgrade. Having said that things in general seem to be working ok, just niggly stuff.
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MacBook Pro 2020 - Big Sur 11.3
BiaB UltraPak+ 2020 Mac, (423)
Yamaha SLG200N
Epiphone Les Paul Studio

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