Putting your controller inside a structure or any piece of geometry with collision and turning virtually results in the character IK freaking out. With enough forward moment from a dash or just from running you can even phase through walls just with turning. Apparently this also works without having previous momentum.

During gameplay this can happen as phasing through the pit walls and leaving bounds, or as phasing through wall structures you shouldn't be able to go through.

While this is a minor issue, it does have big effects, for example disappearing in the pit map is a widely known bug, most likely caused by this.