Hello! I found the bug like in my previous topic (The axe in the air). The weapon was hanging in the air.
This weapon is left over from a murdered enemy (hunter). Location: the Sealed Gate. Platform: PC (Epic Games). When I went back to the Sealed Gate, the gun disappeared.
Screenshot: https://s8.hostingkartinok.com/uploads/images/2019/09/cced39ca1b7e4a722e5352e35afce571.jpg
Same situation was in Lair of the Horned Devil with gun of Grey One.