I have ordered the book cover keyboard with a touch bar for the galaxy tab. s7+ and it was delivered yesterday. Gonna try this trick. I hope it will work. Thank's  :)

This is the problem of Samsung, not Android OS. Compare keyboards for Lenovo or Huawei tablets - volume or brightness buttons work perfectly. I am disappointed as well. I used to work or play with Huawei MediaPad M5 with book cover keyboard. No probl...