Buggy darius? or buggy poppy?

So i encountered 3 strange bugs in 1 game with a poppy vs darius top lane.

BUG 1. probably the worst one. i charged him and it lagged for a second and sent me THROUGH him, i had pathed 0 minions with me so im positive it hit him.

Bug 2. I ultied him ( r tap not knockback) and he didnt go into the air and become untargetable he simply sat on the ground as if he had used a zhonya's.

Bug 3. i ultied him and ON THE WAY UP he managed to kill me with his ult. idk if thats new or is working as intended, it just seemed odd and made me jump tf up in a rage lol