> Can you provide a link to the commit that fixes it?

If I understand the issue [0] correctly, these two commits should be the fix:

https://github.com/signalapp/Signal-Android/commit/e90fa05d6...

https://github.com/signalapp/Signal-Android/commit/b9657208f...

The former updates how recipients (or really threads, I suppose) are merged (the issue occurred when trimming threads) and the latter changes the way how thread ids are generated (now automatically incremented). Together they should prevent unrelated recipients (threads) from being merged.

[0]: https://github.com/signalapp/Signal-Android/issues/10247#iss...