[GAMEPLAY] "Aery" Rune stopped working, "respawned" only after death [Following an autoattack kill]

As the title says, I just experienced a game where the "Aery" rune stopped working entirely until I died next which was for about 20 minutes.

I was playing Orianna (Skin: Gothic Orianna) and what led to Aery not respawning was me killing the enemy Leona with one of my autoattacks. Before the autoattack flew, the Aery rune was up and the symbol was visible above my skill bar. Upon auto attacking, the symbol disappeared, but the auto attack itself killed Leona. I never saw the Aery visual hitting her before or after she died. After that, Aery would not return to me. The symbol didn't show up again above my skillbar and the damage and shield counter remained the same. Aery only respawned once I respawned in base after dying. After that, the damage and shield count started counting normally again. I also didn't notice the additional damage by Aery, so I doubt it was a visual bug.

Otherwise, I didn't see anything unusual that could have caused this happening. There was an enemy Zilean buffing and throwing bombs on Leona when she died, but I don't know if that could have caused some odd interaction with Aery. Feel free to ask for additional information, I can't think of anything else that would be interesting to add right now.

Greetings, Izussa