Whenever I start phd2 (2.6.6.rev20190325-0ppa1~ubuntu18.04) on my Laptop and press Help, About... it immediately crashes.
klaus@sirius:~$ phd2 (phd2.bin:3455): Gtk-WARNING **: 19:24:07.966: Unable to locate theme engine in module_path: "adwaita", (phd2.bin:3455): Gtk-WARNING **: 19:24:07.973: Unable to locate theme engine in module_path: "adwaita", (phd2.bin:3455): Gdk-CRITICAL **: 19:24:08.454: _gdk_pixmap_new: assertion '(width != 0) && (height != 0)' failed (phd2.bin:3455): Gdk-CRITICAL **: 19:24:08.454: IA__gdk_gc_new: assertion 'drawable != NULL' failed (phd2.bin:3455): Gdk-CRITICAL **: 19:24:08.454: IA__gdk_draw_drawable: assertion 'GDK_IS_DRAWABLE (drawable)' failed (phd2.bin:3455): GLib-GObject-CRITICAL **: 19:24:08.454: g_object_unref: assertion 'G_IS_OBJECT (object)' failed Segmentation fault (core dumped) klaus@sirius:~$