Potentially unrelated, but some adjecent weirdness that I figure might be worth sharing:
Since I blew out all of my script-related triggers (I did take a backup but a lot of them were old so I decided to start from scratch now that BTT is working for me again) I started creating some new ones using the BTT inline editor. I would get “Syntax Error” for everything, even very simple scripts that I knew were valid. So I opened the macOS Script Editor and the same simple scripts wouldn’t run/compile there either. No error, no feedback at all, just unresponsive buttons.
I searched around and found another user with a similar issue that solved it by copying the file “Applescript.component” from \System\Library\Components to \Library\Components (for me the latter was empty) which solved the issue in both macOS Script Editor and BTT inline editor. 