I'm not sure how people who are not part of the company can fix those problems? Apart from using the software to run a different service I guess.
Signal isn't run by a company, but rather a nonprofit. It's an open source project where a huge portion of the development effort is from community work. 2,149 accepted changes from random online contributers: https://github.com/signalapp/Signal-Android/pulls?q=is%3Apr+is%3Aclosed (that number may be a little high because unaccepted contributions are included in that page too, but i keep clicking different pages and i only see acceptance (PR merging) of every suggested change, over and over again.)
Uhh ... I'm now seeing a lot of pull requests that are not marked as accepted and merged, but have comments indicating they were, like https://github.com/signalapp/Signal-Android/pull/9090 which says "thanks for merging" but github does not report it as merged. So, please take a screenshot and visit the contributor in person to compare, since it's incredibly hard for me to. There are a _lot_ of PR's with this attribute right now.
