Open an NPC's Backpack

[DemonRok]

When I request the opening of an NPC's backpack and go out of range, ClassicUO loses the PG as source. It almost seems that the PC becomes the NPC. If I'm riding, I lose the mount but only graphically because I can go down and up and the drawing is restored.
the same thing happens if I teleport in recall to an out of range position.

I have no way to take screenshots, but I've put a video describing exactly what's going on on ClassicUO's Discord channel. I'm using the latest available version of the client with polserver.

Video: https://cdn.discordapp.com/attachments/1147531480797556786/1147531481682559027/openpack.mp4
https://discord.com/channels/458277173208547350/1147531480797556786