We have created a public beta version which should fix the crash with multi-monitor usage:
Bome MIDI Translator Pro 1.9.1 beta build 1059 – expired November 25, 2023
This fix required an update of the entire underlying Java library used for the user interface. Although we have found it to be stable, there might be unexpected side effects.
A nice side effect is that this version allows us to make MT Pro a universal application (Intel 64-bit and native Apple Silicon).
Thanks everyone for trying… and please report your experiences here.