Change of language and Scrivener refuses to load

Just a heads up on strange behaviour.

I have Win set to US English as I usually write in that language. I tried changing the Win setting to Australian and then Scrivener refused to load, crashing at loading dictionary.

Changing back to US and Scrivener worked again.

Downloading the Aus dictionary within Scrivener and changing to Aus from there and it works.

I didn’t check to see if the behaviour was the same with other programs.

FWIW, I am running the Insider Win 10 ARM64 on an M1 MacBook Air.