GNOME problem reporting keeps crashing

I am experiencing issues with the GNOME problem reporting software (gnome-abrt). I open it up because I want to report the errors I get (I get a lot of crashes in software **and** system crashes) but libreport itself crashes and doesn't let me report the issues. At first I thought it was the custom theme I installed that was causing this:

~$ gnome-abrt

(gnome-abrt:12043): Gtk-WARNING **: 17:29:39.302: Theme parsing error: main-dark.css:2470:0: Expected a valid selector

(org.freedesktop.GnomeAbrt:12068): Gtk-WARNING **: 17:29:42.849: Theme parsing error: main-dark.css:2470:0: Expected a valid selector
free(): double free detected in tcache 2

But switching back to the default theme causes the same:

free(): double free detected in tcache 2

Any help is greatly appreciated.