Hi folks! Dev from Arachnid here: we are still pulling our hair out over this bug. Due to the tiny active team-size and our limited resources, we are having one hell of a time trying to recreate this bug on our machines. We cant possibly convey how much we appreciate your patience while we iron it out and get our next patch set up. We are currently working with our Steam community to get it sorted, hang tight!
not sure if it would help at all, but the twitch stream i saw the bug occur was the GOGcom channel (GOG's twitch channel) https://www.twitch.tv/videos/316769054
this should be a link to the video showing it happen
as i said i dont know if any of this could help y'all, but i thought it couldn't hurt
ps: glad to see your communication about knowing about the bug and that you are trying to pin it down
your game is great from what i have played through so far