Booxtor, today unfortunately I found a rather serious bug

The sequence is this:
- I open a pdf in portrait mode
- I select "Rotation"
- The pdf is in landscape mode
- I select "crop page"
At this point I start reading and the touchscreen suddenly goes crazy. The menu that appears by pressing in the middle of the screen it activates automatically and disappears automatically (this happens several times).
At a certain point the touch no longer responds and you can interact only with the stylus.
In some cases, when I touched the screen several times, it stopped completely and I had to restart (it seems that the various touches have overloaded the system).
All this does not happen in portrait mode.
I hope it's not a hardware problem and I'm waiting for your answer because this bug creates a certain concern for me.