devtrackers.gg
When you are in the Glowecestrescire region and you have your cloak on, after you launch the first attack and put the weapon away, Mari Lwyd's cloak appears out of nowhere replacing the cloak you have on and won't let you take it off normally, you have to go to another region, unequip the armor except the cloak and then put on the cloak, so that the armor respawns as it should.
This is a very old bug, but it seems to have gotten worse and is still unresolved.
NOTE: I'm not in a story mission of the game.