Trying to remove all message handlers from a WKUserContentController using removeAllScriptMessageHandlers() doesn't seem to be working.
There is not an API to view all message handlers from a WKUserContentController, but I have noticed that trying to remove all of them using removeAllScriptMessageHandlers() doesn't release those handlers, as by adding them, the WKUserContentController seems to retain them.
This I can reproduce 100% of the time. And in comparison, using removeScriptMessageHandler(forName:) seems to be working fine, and the message handlers gets released.
Having a removeAllScriptMessageHandlers() is specially helpful when, like in my case, you have many different message handlers, with different names.
If necessary I can provide with a small working prototype to test it.
Created attachment 434252 [details]
Committed r280325 (239972@main): <https://commits.webkit.org/239972@main>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 434252 [details].
*** Bug 231659 has been marked as a duplicate of this bug. ***