--- scripts/ui/ui_test.gd
+++ scripts/ui/ui_test.gd
@@ -182,6 +182,11 @@ static func run(main: Node) -> void:
 				plus7 = true
 	check(ws != null and eb.find_child("Slot_costume_weapon", true, false) != null and plus7, "slots around the preview, +7 refine badge")
 	check(eb.find_child("Stats", true, false) != null, "stat summary")
+	await equip_toggle_clicks(main, hud)
+	EquipWindow.show_3d = true
+	hud.toggle("equip")
+	await frames(main, 6)
+	eb = hud.bodies["equip"]
 	var r0: float = hero.rotation.y
 	var mm := InputEventMouseMotion.new()
 	mm.relative = Vector2(60, 0)
@@ -337,4 +342,65 @@ static func _v2_skills(main: Node, hud) -> void:
 		check(hud.ui_root.find_child("PadAwaken", true, false) != null, "HUD: transformation button on the skill pad")
 		if is_instance_valid(m) and not m.dead:
 			m.map.remove_mob(m)
+	# sticky tooltips (ui/hover_tip.gd) + shimmering skill icons
+	var ht = hud.get_meta("ui3_tip") if hud.has_meta("ui3_tip") else null
+	check(ht != null and hud.hot_buttons[0].has_meta("ui3_tip") and hud.hot_buttons[0].tooltip_text == "", "hotbar: sticky tooltip key, native tooltip off")
+	if ht:
+		var tip: Control = ht.build("skill:dc_shield_rush", null)
+		check(tip != null and tip.find_children("*", "Label", true, false).size() >= 3, "sticky skill tip: header + texts")
+		tip.free()
+	var st: Control = load("res://scripts/icons.gd").skill_tile("dc_shield_rush", 56.0)
+	check(st.find_child("Shimmer", true, false) != null, "skill icon tile carries the shimmer layer")
+	check(hud.hot_buttons.all(func(b): return b.get_node_or_null("CdSweep") != null), "every hotbar slot (pad + F5-F9 row) has the clock cooldown")
+	st.free()
+
+
+## Clicks a control through real input events (motion + press + release at its centre, like a player) and
+## returns the control the viewport reported under the mouse (for "an overlay eats the click" bugs).
+static func real_click(main: Node, c: Control, churn: bool = false) -> Control:
+	var vp: Viewport = main.get_viewport()
+	var at: Vector2 = c.get_global_rect().get_center()
+	var mm := InputEventMouseMotion.new()
+	mm.position = at
+	mm.global_position = at
+	vp.push_input(mm, true)
+	await frames(main, 2)
+	var hov: Control = vp.gui_get_hovered_control()
+	for pressed in [true, false]:
+		if churn and not pressed:
+			# an HP / SP tick between mouse-down and mouse-up (combat, regen): the HUD refreshes its windows
+			PlayerState.changed.emit()
+			await frames(main, 2)
+		var mb := InputEventMouseButton.new()
+		mb.button_index = MOUSE_BUTTON_LEFT
+		mb.pressed = pressed
+		mb.position = at
+		mb.global_position = at
+		vp.push_input(mb, true)
+		await frames(main, 2)
+	return hov
+
+
+## Equipment 2D <-> 3D switch by real clicks (owner bug 2026-09-30: the 3D button did nothing).
+static func equip_toggle_clicks(main: Node, hud) -> void:
+	close_all(hud)
+	EquipWindow.show_3d = false
+	hud.toggle("equip")
+	await frames(main, 8)
+	var eb: Control = hud.bodies["equip"]
+	var b3: Button = eb.find_child("View3D", true, false)
+	check(b3 != null and not b3.disabled, "equip: 3D button present and enabled")
+	if b3 == null:
+		return
+	var hov: Control = await real_click(main, b3, true)
+	await frames(main, 6)
+	check(hov == b3, "equip: nothing covers the 3D button (under the mouse: %s)" % (str(hov.get_path()) if hov else "none"))
+	check(EquipWindow.show_3d and eb.find_child("Preview3D", true, false) != null, "equip: a real click on 3D shows the 3D hero (with an HP tick mid-click)")
+	var b2: Button = eb.find_child("View2D", true, false)
+	if b2:
+		var hov2: Control = await real_click(main, b2, true)
+		await frames(main, 6)
+		check(hov2 == b2 and not EquipWindow.show_3d and eb.find_child("Portrait", true, false) != null,
+			"equip: a real click on 2D brings the portrait back (under the mouse: %s)" % (str(hov2.get_path()) if hov2 else "none"))
+	close_all(hud)