Describe the bug
Inability to leave the plane by pressing shift

To Reproduce
Steps to reproduce the behaviour:

1. Spawn in any type of plane or helicopter (e.g. F22 Raptor)
2. Mount the vehicle
3. Toggle the perspective (F5 in the default key layout)

Expected behaviour
The ability to leave the vehicle as usual by pressing shift

Versions:

• Forge: 1.12.2-14.23.4.2759
• Flan's Mod: 1.12.2-v5.6-beta.4

Additional context
The bug persists, even after changing the perspective again to first person

Fixed in 51bca3b