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!
ybentz
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Post
Replies
Boosts
Views
Activity
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?