Follow-up: geany is GTK+2 app (more to the proof that GTK+3 isn't the culprit), and it crashes only if "debugger" plugin is enabled, see [1].
[1] https://bugs.debian.org/763050
Follow-up: geany is GTK+2 app (more to the proof that GTK+3 isn't the culprit), and it crashes only if "debugger" plugin is enabled, see [1].
[1] https://bugs.debian.org/763050