Negative lookbehind not working in watched words regex

[tkrunning (Thomas K. Running)]

Turns out it’s only supported from Safari 16.4, and I had 16.3.

Still causing other issues for me, though (like can’t save my user preferences):

What could be causing 500 errors when saving user preferences?

So I guess it might actually have been this error: [CleanShot 2023-08-03 at 12.17.58@2x] I figured that one was just showing up due to this issue: However, it turns out it’s all related. Here are the full logs: Info: RegexpError (invalid pattern in look-behind: /((?<!estonia.*\s)\be-residence\b(?!.*estonia))/i) app/services/word_watcher.rb:264:in `initialize' app/services/word_watcher.rb:264:in `new' app/services/word_watcher.rb:264:in `block in replace' app/services/word_watcher.rb:262…