As recently discused in IRC Auto-close plugin was the first who use plugin_signal_connect to connect signal to Scintilla editor widget. What plugin writers need to know - you shouldn't do this in that way:)

I tested it on new version of GLib and it doesn't crash at exit but reports many messages like this:

(geany:28381): GLib-GObject-WARNING **: gsignal.c:2580: instance '0x2dc1940' has no handler with id '3442'

This is definitely Auto-close issue but I afraid to fix this just before release because I don't really understand how Geany objects and their signals working.

It may crash on very old GLib (2.22) at exit.

AFAIK Colomban Wendling prepaered a patch for Geany core but it will be avaiable only after release.

-- Best regards, Pavel Roschin aka RPG