Scourge of the Skies - Hitbox issue

So it looks like this boss has 3 hitboxes.
Body + each wing.

This makes a few issues:

When rolling near the boss, the player get stuck between body hitbox and wing hitbox.

When running next to the boss, you also get stuck on the wings many times.

Visually it looks horrible, because the player character keeps warping around. So you get pushed back to where you came from, kind of like "lag".

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Beside that, this fight has a severe issue with visual clarity.

The bird will spit, but there is no way to tell where the puke will land. So its more a game of chance the timing/skill.