Originally posted by Shadow:

a strange blue mask has appeared, which is everywhere for him, if I change the appearance of the animal, the mask stays on it, it does not help to read the game anew. In other forms, the problem does not occur. I play on mods, but after they are turned off, the problem still occurs. I forgot, I added gold using the console to get equipment for the gambler.

The issue is an incompatibility between a Pet mod and a Vendor mod.

Without a mod load order listed here it's difficult to know for sure.

I think that the problem appeared after the temporary change of the pet to the animal boss with masks, the problem disappears when I reset the appearance of the animal, but returns when I load the game. I have no idea how to fix this problem.

Originally posted by Shadow:

I think that the problem appeared after the temporary change of the pet to the animal boss with masks, the problem disappears when I reset the appearance of the animal, but returns when I load the game. I have no idea how to fix this problem.

This particular Pet Transform became bound to the Pet. At this point the solution would involve losing the character. I'm not sure if that's desirable at this point. Unfortunately some Pet mods contain bugs like this.

A similar thing just happened to my War Bot. I added Bob's Mod to the load order for my TL2-ACE mod, and then I noticed I was getting strange new fish. I started changing my pet into these types of fish, but eventually my pet disappeared. I tried a bunch of things but he never showed up. I cannot transfer anything to him. His picture is gone. His tags and collar don's show up, and his skills have a faded look.

The only fix is to feed him a fish, and then he'll show up for a while. Thanks to one of the mods I can also give him a permanent look (it's called an aspect), but if I ever feed him a fish again, he'll disappear when the time is up again.

I'm researching older threads, but it seems, as you say, that it's a bug from a mod, and since Bob's Mod was installed just today, and I've been playing my mod order with no issues until today, it's probably Bob's Mod. I've removed Bob's Mod, but I guess my pet is permanently messed up now because the problem persists.