diff --git a/libs/ui/include/psemek/ui/element.hpp b/libs/ui/include/psemek/ui/element.hpp
index 319df991..ee057f66 100644
--- a/libs/ui/include/psemek/ui/element.hpp
+++ b/libs/ui/include/psemek/ui/element.hpp
@@ -19,7 +19,7 @@ namespace psemek::ui
 		: std::enable_shared_from_this<element>
 	{
 		virtual element * parent() const { return parent_; }
-		virtual void set_parent(element * parent) { parent_ = parent; }
+		virtual void set_parent(element * parent);
 
 		using children_range = util::span<element * const>;
 
@@ -28,7 +28,7 @@ namespace psemek::ui
 		virtual element * root();
 		virtual element const * root() const;
 		virtual async::event_loop * loop() const;
-		virtual void set_loop(async::event_loop * loop) { loop_ = loop; }
+		virtual void set_loop(async::event_loop * loop);
 
 		virtual bool on_event(mouse_move  const &) { return false; }
 		virtual bool on_event(mouse_click const &) { return false; }
@@ -81,6 +81,10 @@ namespace psemek::ui
 		std::shared_ptr<struct style const> own_style_;
 		mutable std::shared_ptr<struct style const> merged_style_;
 		mutable std::shared_ptr<struct style const> merged_own_style_;
+
+		mutable std::vector<util::function<void()>> delayed_callbacks_;
+
+		void post_delayed_callbacks() const;
 	};
 
 }
diff --git a/libs/ui/source/element.cpp b/libs/ui/source/element.cpp
index 1be9ab1c..620b186a 100644
--- a/libs/ui/source/element.cpp
+++ b/libs/ui/source/element.cpp
@@ -7,6 +7,13 @@
 namespace psemek::ui
 {
 
+	void element::set_parent(element * parent)
+	{
+		parent_ = parent;
+		if (loop())
+			post_delayed_callbacks();
+	}
+
 	element * element::root()
 	{
 		element * r = this;
@@ -28,6 +35,12 @@ namespace psemek::ui
 		return e->loop_;
 	}
 
+	void element::set_loop(async::event_loop * loop)
+	{
+		loop_ = loop;
+		post_delayed_callbacks();
+	}
+
 	void element::reshape()
 	{
 		reshape(shape().bbox());
@@ -111,6 +124,8 @@ namespace psemek::ui
 		auto l = loop();
 		if (l)
 			l->post(std::move(f));
+		else
+			delayed_callbacks_.push_back(std::move(f));
 	}
 
 	void element::post_reshape()
@@ -128,4 +143,17 @@ namespace psemek::ui
 			if (c) c->set_parent(nullptr);
 	}
 
+	void element::post_delayed_callbacks() const
+	{
+		auto l = loop();
+		assert(l);
+		for (auto & c : delayed_callbacks_)
+			l->post(std::move(c));
+		delayed_callbacks_.clear();
+
+		for (auto const & c : children())
+			if (c)
+				c->post_delayed_callbacks();
+	}
+
 }