Ok the problem was on my end. I had a script that was running on fontWillSave, and it was raising an error. Apparently that also halted the fontWillSave notification overall... So if one script fails, others may not be called? Would it be possible to post the fontWillSave notification even if a script attaching to that event fails? Thanks!

Why do you need those tool objects? Im trying to understand your question ;)

Damn, I was looking for it whole day(forgot what is the name of this extension) Thanks!

@gferreira Thank you Gustavo. I had no idea those notifications are also for the glyph window focus. Great!

this brings a very old issue back... https://github.com/robotools/vanilla/blob/master/Lib/vanilla/vanillaWindows.py#L465-L466 follow up here