I found that Gragas passive (HP regen for a % of max health) doesn't show up properly, at least.

I remember that he had the correct passive at the start of the Co-op game, like how much HP I regain whenever I cast a spell. Then after a while (with couple of kills and deaths), the lux's passive "illumiate" starts to show up. I found this when I was reviving, but the wrong passive was still effective even after revival (btw, lux was on the opponent team). And later in the game, it became "happy hour", but it doesn't show how much HP regen i gain. I'm not sure if it's only a skill description problem, or the passive actually doesn't work.

I had a similar bug like this happen to me, it replaced his passive with recalling, check the screen shot for a better description, highlighted my highlighted passive because screenshots did not capture my cursor.

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yeah it happend for me too it replaced it to recalling for me like valor said

I saw a similar bug today where the passive was showing correctly all game, but the health value in the tooltop was wrong. It stayed at 43 HP all game, even when I went up to 2746 HP, where my passive should've been regenerating 54 HP.

Screenshot attached:

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