If use the Improved virtual keyboard with hardware keyboard, improved virtual keyboard disappear

I’m using a Improved virtual keyboard.
The company is planning to apply the hardware keyboard to the game.
However, when press a particular key on a hardware keyboard, the improved virtual keyboard is automatically hidden.(ex>language, tab, shift).

So I tried two ways.(GameActivity java code)

  1. If VirtualKeyboardInput EditText focus lost, Activate again.
  2. VirtualKeyboardInput::OnKeyPre : Capture key events and process them internally.
    Number 1 failed because I can see it’s Hide and Show.
    Number 2 failed due to local change.( ex> For example, there is a keyboard where shift + space is a language conversion. )

I tried a lot, but I failed.
Please help me.

Hello,

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Thanks