Fanuc R30iB+ controller disabling collision gaurd on certain errors

Pretty much what is happening is whenever we get a weld error with our spot weld guns, or a DCS joint speed error, the collision guard on the robot turns off automatically and has to be put back into T1 mode to manually re-enable it. I've never seen anything like this before, and support so far has been unhelpful. Has anyone seen something like this before?

Thanks.