Strider suffocates when player is saddled on and looking up with Warped Fungus on a Stick

The bug

The player can move on top of other Striders. When the player is saddled on a strider, and on other striders, looking up with a Warped Fungus on a Stick, the player slowly moves into the Strider causing it to suffocate as seen in the video attached.

Expected Result
→ Strider stays at the normal position and does not suffocate

Actual Result 
→Player and the poor Strider suffocates when looking up with a Warped Fungus on a Stick