I submitted an example extension that should allow you to reproduce the issue, I hope this can be resolved quickly so we can launch our extension on Safari, our users already started asking for it! https://feedbackassistant.apple.com/feedback/8745926 Thank you!

Great to hear! Thank you for looking into this so quickly. Is there a time frame for the fix to hit stable? Is it going to be done via Safari update or Xcode update?