gtk4: Citydlg tries to replace actual prod combo with progress bar
gtk4-client citydlg does "gtk_combo_box_set_child(GTK_COMBO_BOX(production_combo), bar);" As GtkComboBox has only one child, this call attempts to replace the actual combo with the progress bar.
gtk4-client citydlg does "gtk_combo_box_set_child(GTK_COMBO_BOX(production_combo), bar);" As GtkComboBox has only one child, this call attempts to replace the actual combo with the progress bar.