German it magazine iX has an interview with the mods of r/de. I don’t know if this was mentioned here before…
Short summary: the mods of the large German communities see a huge issue with reddit not recognizing content creators and mods work and there seems to be growing support for an ongoing blackout or so they say.
Several times, sometimes to find out when an incompatibility was introduced in an upstream dependency to find the maximum compatible version, but usually to find the commit that introduced a strange bug.
The process is always the same… Write a unit test, start bisect, check test select next bisect step, repeat. If your last-known-good and first-known-bad are correct, it always worked for me.