From the explanation [0], this looks like the commit [1].
I do have to say though, the commit messages are very barren and barely any reference an issue directly. My guess is that they develop on private branches with an internal issue tracker and decide not to reference issues as that would be confusing. It would help a bunch if they referenced the public issues and made it clear which issues they're working on. They don't seem to use Github Projects [2].
All in all, the communication / transparency of the project is lacking - even though I'm glad they're providing something usable. Hopefully Matrix will be able to provide something as easily usable as well.
I do have to say though, the commit messages are very barren and barely any reference an issue directly. My guess is that they develop on private branches with an internal issue tracker and decide not to reference issues as that would be confusing. It would help a bunch if they referenced the public issues and made it clear which issues they're working on. They don't seem to use Github Projects [2].
All in all, the communication / transparency of the project is lacking - even though I'm glad they're providing something usable. Hopefully Matrix will be able to provide something as easily usable as well.
[0]: https://github.com/signalapp/Signal-Android/issues/10247#iss...
[1]: https://github.com/signalapp/Signal-Android/commit/83086a5a2...
[2]: https://github.com/signalapp/Signal-Android/projects