The bug

I just gave myself a custom splash potion with all positive effects in creative mode and when I splash myself on the head, I seem to fall over a bit in first person mode (hurt animation). However, I am in creative mode and therefore cannot take any damage. But when I put myself in third person mode, I do not turn over. This bug doesn't seem to happen with any other splash potions.

Command to reproduce

/give @p minecraft:splash_potion{CustomPotionEffects:[{Id:10,Amplifier:2,Duration:24000},{Id:21,Amplifier:24,Duration:24000}]}

Expected behavior

The hurt animation would not play because the player is in creative mode and there are no negative effects being applied to the player.

Actual behavior

The hurt animation plays, even though the player is in creative mode and the player is not being affected by any negative effects.