Gear VR Bug. Press "X" doesn't work when using Bluetooth keyboard

This bug only applies to Gear VR. I got a bluetooth keyboard that has x key but by pressing x key when it says "Press 'X' to Continue" it doesn't do anything so I pressed every button and only one key worked which is "esc" key. Pressing "esc" key asks me if I want to leave the game in Minecraft.
Samsung Galaxy S7