Unsealed Spellbook "Seals" off one of your summoner keys??

Hello! I am a Support amin that has been making great use of the Rune Unsealed Spellbook, Teleporting to turn around ganks, igniting or exhausting during trades and ghosting whenever i feel like it has been a blast, however, i've been running into a bug that would literally "seal" of a summoner key, greying it out and causing it not to be able to be used again. ever.

Has anyone else been running into this?