In case this helps narrowing down the problem, I've verified that this regression wasn't introduced by upgrading any of the libraries gnome-terminal depends on. In particular, it isn't introduced when upgrading libc or libglib from sid. Bug only appears when upgrading gnome-terminal itself.
-- Robert Millan -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org