minecraft crashes when trying to detach elytra at craftbench window

my playing environment

• Device: iPad Pro(2018 model)
• OS: iPad OS 13.6(17G68)
• controller: Dual Shock 4
• app version: 1.16.20

How to reproduce the bug

1. equip elytra
2. open the crafting table popup
3. open the equipment page (like attached image)
4. focus pointer to elytra
5. press X button to detach elytra
6. app crashes

The app mode (survival/creative) is not concerned.

When I play with touching, this phenomenon doesn't happen.