+1 Skill Slot Not Removed when Unequipping Unset Ring

While in town I applied Flicker Strike to my +1 slot with 2 support gems. Bound skill to middle click. Unequipped Unset Ring and realized skillbar still showed Flicker Strike on middle click. This persisted after equipping a different ring (not Unset). Gem menu showed Flicker Strike and it's supports taking up the +1 slot.

Will test if skill is still usable in a map after work.

Edit: If someone could test equipping/unequipping 2 Unset Rings simultaneously that'd be great.

After using two unset rings for some time I took one off and noticed that I didn't lose a skill slot. Taking off the other ring removes a skill slot but that leaves me with one more than I believe I should have. It appears as if wearing two unset rings might give you a permanent extra skill slot.

edit: I played with it some more and it seem to be a visual error related to the positions of your skills in the skill window. If you put on one or two unset rings the new skill slots appear at the bottom of your skill list. If you have a skill gem in the bottom slot, removing one unset ring will not visually remove any skills, as the skill gem in the last position "holds" the slots open. Removing the second unset ring will reduce the number of slots shown by one, leaving you with one extra slot. It appears that the game will disable the extra skills, even if they are shown.

Bumping this. Not sure if it's just a UI bug because I didn't actually try to use the skill but when you equip an unset ring and put a skill in it, then take off the unset ring, the skill stays in the skills list and doesn't come off.