sway: GTK3 (gnome-terminal) crashing

Getting random crashes with gnome-terminal (GTK3) when I click a lot and move between windows (haven’t narrowed down the exact cause). Should I be reporting this here or on wlc? The source appears to be Error 22 (Invalid argument) dispatching to Wayland display.

~ > gdb --args /usr/lib/gnome-terminal/gnome-terminal-server --app-id my.foo
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Reading symbols from /usr/lib/gnome-terminal/gnome-terminal-server...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/lib/gnome-terminal/gnome-terminal-server --app-id my.foo
[New LWP 12011]
[New LWP 12012]
[New LWP 12013]
/usr/lib/gnome-terminal/gnome-terminal-migration: error while loading shared libraries: libgconf-2.so.4: cannot open shared object file: No such file or directory
Profile migrator exited with status 127

(gnome-terminal-server:12007): Gdk-WARNING **: Error 22 (Invalid argument) dispatching to Wayland display.
[LWP 12012 exited]
[LWP 12011 exited]
[LWP 12007 exited]
[Inferior 1 (process 12007) exited with code 01]
(gdb) q