[1.5.10 Ashes] missing tinker slots

[helminthauge]

I'm playing a demonologist and have just unlocked tinker, but I've noticed that there's no tinker slots other than mainhand, offhand, body and rings. I can still attach (and disattach) steam tinker to my headgear, cloak, handgear, belt, boot and lite, so it's just an UI bug.