SD8 Beta testing issue on Intel Mac

I have installed SD8 beta 8A13 on both an Apple silicon Mac mini and an Intel MacBook Pro. So far I have no issues on the Apple silicon mini but, on the Intel MacBook Pro when I open a file the editor displays the code in a foreign language. If I then try to edit a line it changes that line to English. Both systems are running macOS Big Sur.

My MacBook information is:

and a sample of the bad editor screen follows:

Is that a foreign language, or a unicode font issue?