2 files changed, 12 insertions, 13 deletions
diff --git a/src/ui/controls/Control.cpp b/src/ui/controls/Control.cpp
index 02148b72..70a3b1f3 100644
--- a/src/ui/controls/Control.cpp
+++ b/src/ui/controls/Control.cpp
@@ -27,6 +27,7 @@ Control::~Control() {
   }
 
   RemoveFromParent();
+  RemoveAllChild();
 }
 
 std::string Control::GetDebugId() const {
@@ -89,9 +90,8 @@ void Control::InsertChildAt(Control* control, Index index) {
 
   children_.insert(children_.cbegin() + index, control);
   control->parent_ = this;
-
-  TraverseDescendents([this](Control* control) { control->host_ = host_; },
-                      false);
+  control->TraverseDescendents(
+      [this](Control* control) { control->host_ = host_; }, true);
   if (host_) {
     host_->NotifyControlParentChange(control, nullptr, this);
   }
@@ -111,8 +111,8 @@ void Control::RemoveChildAt(Index index) {
   auto control = children_[index];
   children_.erase(children_.cbegin() + index);
   control->parent_ = nullptr;
-  TraverseDescendents([this](Control* control) { control->host_ = nullptr; },
-                      false);
+  control->TraverseDescendents(
+      [this](Control* control) { control->host_ = nullptr; }, true);
   if (host_) {
     host_->NotifyControlParentChange(control, this, nullptr);
   }
diff --git a/src/ui/controls/ControlHost.cpp b/src/ui/controls/ControlHost.cpp
index 09639465..f83aa1a2 100644
--- a/src/ui/controls/ControlHost.cpp
+++ b/src/ui/controls/ControlHost.cpp
@@ -15,11 +15,14 @@ ControlHost::ControlHost(Control* root_control)
       mouse_hover_control_(nullptr),
       mouse_captured_control_(nullptr),
       layout_prefer_to_fill_window_(true) {
-  root_control->TraverseDescendents(
+  root_control_->TraverseDescendents(
       [this](Control* control) { control->host_ = this; }, true);
 }
 
-ControlHost::~ControlHost() {}
+ControlHost::~ControlHost() {
+  root_control_->TraverseDescendents(
+      [this](Control* control) { control->host_ = nullptr; }, true);
+}
 
 platform::gui::INativeWindow* ControlHost::GetNativeWindow() {
   return native_window_.get();
@@ -121,11 +124,7 @@ ControlHost::CreateNativeWindow() {
   return std::unique_ptr<platform::gui::INativeWindow>(native_window);
 }
 
-void ControlHost::InvalidatePaint() {
-  repaint_schedule_canceler_.Reset(
-      platform::gui::IUiApplication::GetInstance()->SetImmediate(
-          [this] { Repaint(); }));
-}
+void ControlHost::InvalidatePaint() { native_window_->RequestRepaint(); }
 
 void ControlHost::InvalidateLayout() {
   relayout_schedule_canceler_.Reset(
@@ -244,7 +243,7 @@ void ControlHost::OnNativeDestroy(platform::gui::INativeWindow* window,
 void ControlHost::OnNativePaint(platform::gui::INativeWindow* window,
                                 std::nullptr_t) {
   CRU_UNUSED(window)
-  InvalidatePaint();
+  Repaint();
 }
 
 void ControlHost::OnNativeResize(platform::gui::INativeWindow* window,