PBR not saved

[Aniki Seetan]

Hi,

I have this recurring issue that happens when I apply PBR textures to some objects and not others. It seems to occur randomly. The viewer doesn't save the texture; if I copy it, it removes it. If I take it from the inventory and place it back, it removes it again. I have to apply the texture dozens of times before it finally keep, which is a huge waste of time. Does anyone know where this problem comes from ?

This issue doesn't occur with non-PBR textures. I have cleared the cache, changed viewers, and re-uploaded the textures and object, but the problem persists.

https://imgur.com/a/Ywj4FTO