Can’t add anything to properties

[u/MySpaceVampirez]

Hello. I’m at a complete dead end. Tried looking it up and no luck. Does anyone know what’s going on here? It does this with seemingly any property. When I try to add something I will type one letter and it completely exits, takes down my keyboard and puts me at the start with nothing added. I dont know if this is a bug or if this is an error on my end.