Dear Maintainer,

If Mutt is left running in a terminal window in Gnome and the screen is first locked due
to user inactivity and then unlocked, the terminal window with all its tabs often looks
blank and totally black even though Mutt is still active as well as other programs running
in other tabs of the same window. Mutt and those other programs receive keyboard and
pointer input, change the pointer if it is moved across the terminal window and work
normally, except that their output has become invisible. This situation does not change
even if Mutt is closed (using the quit command, for instance) and can only be ended by
closing all tabs and hence the whole terminal window.