7 Mages

Got a bit confused about secret rooms on the 3rd floor of the Crypt.
First one - a wall button opens a small hidden room, wich contains another button that opens a second secret room (2x2), but it seems completely empty. Using true seeing spell doesn't show anything. Is it supposed to be empty, or am i missing something?
Second one - very close to the room with the elevator, a 2x1 hidden room. After using true seeing spell i get a message "a false wall conceals a hidden button", but i can't figure out where this false wall is - tried to tap on the walls inside the room, nothing happened.

Oh, come on, guys, anyone?

Those Secret rooms are empty, most probably part of Tutorial.