[BUG] Ravage deals dmg to Kez through his 100% magic res during ult

Really weird interaction I came across today. Ravage does dmg to Kez during the cast of raptor dance even though he is supposed to have 100% magic res. No other nuke behaves like this afaik. Its not like ravage is piercing or anything. Fate's edict stops the dmg completely.

https://reddit.com/link/1pgwcra/video/lwm7hgtf4v5g1/player