Problem with Exam Mode

[RevoGen]

I bought HP Prime a few weeks ago, updated to 12066 (latest firmware)and tested out features based on the guide pdf.

There's a problem with the exam mode
https://ibb.co/hVoJga

That is :
the "hide" option does the same thing as the "erase" option
the "keep and restore" option does the same thing as the "keep" option
It didn't went through this (clearing memory) :
https://ibb.co/h54c7F
(virtual calculator)

Similarly when I tried to Reset to Factory Settings
which is Apps+Esc+On and got stuck here (clearing memory) :
https://ibb.co/bziyEv
(I took of the battery, back to where I started)

Any help?
(and am i the only one with this problem or is it a firmware bug?)