My players randomly lose the ability to open their backpacks. I have the permissions assigned to the "default" group and still they lose the permission. I verified they are in the group, that the group has the permission, and it still doesn't work. I have to manually add the permissions to each individual player to prevent them from losing the function.

Is this a bug, is anybody else experiencing this?

Does it explicitly tell them they have no permission, or can they simply not access their backpack?