To Reproduce
Steps to reproduce the crash:

1. Go to 'https://www.curseforge.com/minecraft/mc-mods/paragliders/files/4478246' and download
2. Launch forge 1.18.2 with both mods
3. Equip an outfit or piece of custom and either deku leaf or paraglider and jump from at least one block high with paraglider or deku leaf in hand to use the item.
4. See crash

Crash log
https://pastebin.com/EAR7NXDU

Additional context
When using the armour hider your armour becomes visible when using paraglider but doesn't crash.