[Evaristo]

I think there is a bug in Koreader for Kindle, at least in the version for Kindle Oasis 2.

It can be noticed when starting Koreader from Kual. Its occurrence is not systematic and occurs only some of the times. It occurs for a reason that I could not identify, so to my eyes it is a random behaviour.

The behaviour is quite strange because it presents the text in the screen upside-down (and stays upside-down whenever I move the Kindle) and when I try to get to the menu options, the menu is presented in the opposite inverted location from where the touch is expected by Koreader. You can learn to read upside-down and, after long trying, you can get lucky and manage to touch in the exact inverted position of the place where the menu entry that you want to press is shown, but it is not an easy task. The only sensible solution is to reset the kindle with a long press of the lock button and to try restarting the Koreader and hope that it will start "normally".

Am I missing something that I should do differently, or is it a bug of Koreader?

Thanks!