diff -r 799c8f60b9f1 -r 1c3af8e31d8e ui/gtk/toolbar.c
--- a/ui/gtk/toolbar.c	Tue Oct 29 10:43:59 2024 +0100
+++ b/ui/gtk/toolbar.c	Tue Oct 29 11:17:59 2024 +0100
@@ -145,6 +145,8 @@
     }
     gtk_tool_item_set_is_important(button, TRUE);
     
+    ui_set_widget_ngroups(obj->ctx, GTK_WIDGET(button), item->args.groups, item->ngroups);
+    
     if(item->args.onclick) {
         UiEventData *event = cxMalloc(
                 obj->ctx->allocator,
@@ -189,6 +191,7 @@
             set_toolbutton_icon(button, item->args.icon);
         }    
     }
+    ui_set_widget_ngroups(obj->ctx, GTK_WIDGET(button), item->args.groups, item->ngroups);
     
     UiVar* var = uic_widget_var(obj->ctx, obj->ctx, NULL, item->args.varname, UI_VAR_INTEGER);
     if(var) {
@@ -406,6 +409,7 @@
     if(item->args.icon) {
         ui_button_set_icon_name(button, item->args.icon);
     }
+    ui_set_widget_groups(obj->ctx, button, item->args.groups);
     
     gtk_header_bar_pack_start(hb, button);