Cross-posted from the Teams board...
The SharePoint Roadmap Pitstop: March 2021 post (posted 3/31) included the following:
I've tested this in two different tenants (one standard, one early release) and the issue has not been resolved. There's no corresponding roadmap item, and no update has been posted to the two UserVoice items here and here.
Has anyone had luck seeing this fix in their tenant, or have any more info on when we can expect this to take effect? This is a huge problem that is causing lots of headaches in many orgs and has been on the backlog for around four years, so I'm excited to finally seeing it possibly getting resolved.