I was not going to know that this is a button, if I wasn't reading the release notes where you mentioned that there are these new possibilities like "Actions Executed On Long Key Hold Down" etc.
Maybe something is broken on my end since I can see in people's screenshot this button is present, but not sure how I can solve it without completely reinstalling BTT.
It's a bit weird, Apple's SFSymbols app does list the symbol as being available on older macOS, but searching for the symbol on github etc. only brings up newer matches. I'll try with a fallback symbol in the next build.
