I made a mistake when trying to improve the performance of opening a virtual folder. After getting all the local messages, the view calls Sort() which tells the front end to invalidate the list when it's finished sorting. I'd been under the impression this happened in all cases but it doesn't if the list is threaded – Sort() isn't called in that case so no invalidation happens.

I'll add the Invalidate call that I thought was already there.

Pushed by geoff@darktrojan.net:
https://hg.mozilla.org/comm-central/rev/c89e92423ca7
Invalidate virtual folder views after searching locally and before searching remotely. r=leftmostcat

Comment on attachment 9338026 [details]
Bug 1837368 - Invalidate virtual folder views after searching locally and before searching remotely. r=#thunderbird-reviewers

[Approval Request Comment]
Regression caused by (bug #): new mail tabs
User impact if declined: virtual folders load slowly
Testing completed (on c-c, etc.): landed over a week ago
Risk to taking this patch (and alternatives if risky): low

Comment on attachment 9338026 [details]
Bug 1837368 - Invalidate virtual folder views after searching locally and before searching remotely. r=#thunderbird-reviewers

[Triage Comment]
Approved for beta

Thunderbird 115.0b5:
https://hg.mozilla.org/releases/comm-beta/rev/62f8b0c3ff47