When pressing E during conversation starts the conversation again. While it didn't end my run (yet), it can mess conversation stuff like the response choice menu up.

I could choose to put posters at place where I did already put them (the quest for the mascot at Buyo burgers). Idk if it also doesn't progress quests. I think that I could trigger this bug either by starting another run or by changing maps (entering interior/bus and then the city again) after putting poster somewhere. And the poster was still there, but I could now redo the action.

In the sewers, the fake mascot seems to be buggy at the runs after the first encounter. The first time he was behaving normally, but at following runs he got a double - I encountered his one self at his spot where he is pretending to be the friendly mascot. And then I encountered his running torso in the sewers. And when he started chasing me, he was flying all over the place.

Now I am not sure if that's still at 2.1 version, but for anybody wanting test it out - in the previous version, the poison crawling (I forgot their name, but they usually spawn at alleys near rats) demons weren't able to hit me much.

When equipping and unequipping the giant bear doll I got stuck and was unable to move.

Maybe I was just using it wrong, but after equipping the Obsidian ring it didn't show/highlight me anything opposite of what it describes.