Many are burnt out from Safari being a boat anchor being held in place by app-store control. We want to be be able to leave this spot & move on. But we are all anchored here. There is no rest from this, no remedy is coming, we can only drown ourselves in temprary forgetting of the pervasive unjust suppression.
SharedWorkers was but one (particularly salty) place crucial to the enterprise where Safari took an anti- stand.
I don’t know what trauma you’ve experienced, but if you have and it’s presenting itself in missing browser functionality I hope you’ll take some time off to rest, you surely deserve it and very likely need it. And I apologize for the aggressive way I framed my comment.