bug in linux terminal with mc and nano

[rofl0r]

• open a linux terminal
• run midnight commander
• in midnight commander, run nano inexistant_file
• nano opens, close it with CTRL-X
  now you get a black screen with a blinking cursor.
  the cursor transformed from previously _ to [] style, i.e. it looks like an insert-mode cursor.
• quit mc py pressing F10.
  the cursor still is [], and the terminal state is messed up. text you enter is not visible.
  need to type reset to get the terminal back into a usable state.

[rofl0r]

the same happens after opening/closing hexedit(0r), so it's probably not nano's fault.