Still a problem on 0.55.
A character can be just fine--then you look through the binoculars, and suddenly your aim is hyper-shaky. It's not even just your aim: you can look down at your empty hands and see them shaking like crazy.
It may or may not be a temperature-related bug, but it seems to be triggered by looking through binoculars. And it seems like the only way to fix it is to start a new character.
These three bugs seem to be the same issue: