> Author's latest title has enormous memory leaks in linux through proton...

If this is something the dev can reasonably fix by changing their game, then it'd be good for them to do so. Looking at the discussion in the thread, it looks like the dev is actively working to fix this for everyone, and not just the subset of folks that he fixed it for.

However, if this doesn't happen on Windows, I'd argue that it's a bug that needs to be reported against and fixed in Wine/Proton/Crossover.

Maybe. But also imo it happened because the author was not testing proton/crossover at all until the beta was released, and even then only later that did people started reporting it. Developing in one platform and then post-release fixing bugs in others that the game is not actually meant to be played is probably not easy.

The bug is still there, disabling assisted moves helps a lot and it triggers less but it still happens if you are unlucky.

Just to note that the author seems in general very nice and helpful, and one can choose what platforms they want to support, I just wish we could get native builds for more platforms like with duskers 1, which had native macos and linux, or at very least to have wine supported so that there is less of windows monopoly in games.