Crash in set_blink_settings()
From Red Hat 1657512
A crash is seen in the first line of set_blink_settings():
m_cursor_blink_cycle = blink_time / 2;
This is vte.cc line 8305 in 0.54.2, RH patches don't affect the line number.
blink_time is a parameter to this function,
m_cursor_blink_cycle is obviously a member of the Terminal class. The only reasonable explanation for this line to crash is that the method is called on something that's not (anymore) a Terminal object.
Indeed, it's pretty easy to reproduce. After closing at least one terminal tab, and subsequently altering dconf's /org/gnome/desktop/interface/cursor-blink-time, you get at the very least some nasty GTK+ warnings if not a crash.
When closing a terminal, some dangling callback seems to remain there watching for GTK+ settings.