Some keyboard keys are dead

Some keyboard keys are working, and others not, like E for opening creative or survival inventory, I tried to jump my character by pressing space, but it wouldn't jump, These are the dead keyboard keys:

1- E for opening inventory
2- Space for jump
and other dead keys

While the other keys:

1- wasd for moving character
2- typing for the chat and fields
3- esc for game menu
and other keys

Steps to reproduce:
1. Get and plug your OTG adapter to your phone
2. Plug your keyboard's USB into OTG Adapter
3. Go to Minecraft PE and click on any worlds
4. Press E and press Space