STR: 1. open any file 2. Document - filetype - others - Default 3. Crash ** GtkSourceView:ERROR:gtksourcecontextengine.c:5446:update_syntax: assertion failed: (state->context != NULL)
I can reproduce with GTK+ 2 build but not GTK+ 3 build (gtksourceview 3 doesn't have 'Defaults' filetype). This is most likely a bug in GtkSourceView since it only affects one filetype.
Yes, i think it's most likely GtkSourceView problem.