Dear Maintainer,

when using gnome-terminal i sometimes find that the entire window
(including the title bar and the tabs as well as all the text area)
has gone completely blank.  it is still responsive to key strokes.

this typically happens when i am using conserver to connect to a
host's serial console over ipmi while rebooting the remote host.
if my laptop's screen locks or if i switch to another workspace
and then return, often i find gnome-termninal in this completely
black state.  i used rxvt-unicode for many years in this workflow
without experiencing this issue.

i apologize for the vague nature of this bug report and hope i am
directing it at the proper component.

thanks in advance.

	andy

i just had this a variant of this occur while running ansible in a tmux
session.  screenshot attached..  in this variant the terminal window is
not completely blank, but is almost unreadable w/a greatly-reduced
contrast.  the window was maximized and a shadow remains at that size.