[GAMEPLAY] Relic Shield not triggering

For all of my games today with Thresh, my Relic Shield and all evolutions of it have not been triggering the gold sharing consistently. I will auto attack a minion below the threshold HP, and it will just register a regular auto, the 'execute' will not trigger to kill the minion. Sometimes the passive will trigger, sometimes it won't, all the requirements are met:

• allied champion in range
• minion below HP threshold (200-300)
• auto attack
• charges available on the item I've auto'd a minion at 80 HP with an ally marksman within Flay range, and it just did regular AD. It just seems really buggy right now. As I said, sometimes the item will behave as expected, but I can't seem to predict when it will work as I'm used to.__

I've played 3 games today, and every game has experienced this. My ping is registering at ~33-35ms so it isn't lag. I haven't played any other champions yet today, but I can tell you it happened with Thresh 3 times, using his Blood Moon, and Deep Terror skins, although I don't think the skins would matter in this case.

Has anyone else experienced inconsistent or unpredictable Relic Shield behaviour?