Comment 2 for bug 1723559

StacktraceTop:
 gtk_tree_model_get_valist (tree_model=tree_model@entry=0x5633c40b2090, iter=iter@entry=0x7fff4d58e390, var_args=var_args@entry=0x7fff4d58e290) at ././gtk/gtktreemodel.c:1800
 gtk_tree_model_get (tree_model=0x5633c40b2090, iter=iter@entry=0x7fff4d58e390) at ././gtk/gtktreemodel.c:1762
 style_scheme_changed (treeview=<optimized out>, dlg=0x5633c403a430) at pluma-preferences-dialog.c:650
 g_closure_invoke (closure=0x5633c40a1be0, return_value=0x0, n_param_values=1, param_values=0x7fff4d58e5b0, invocation_hint=0x7fff4d58e530) at ../../../../gobject/gclosure.c:804
 signal_emit_unlocked_R (node=node@entry=0x5633c39d58a0, detail=detail@entry=0, instance=instance@entry=0x5633c3dc67c0, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff4d58e5b0) at ../../../../gobject/gsignal.c:3635