diff --git a/Import/GacUI.cpp b/Import/GacUI.cpp
index 982b2c5e..95e95f4b 100644
--- a/Import/GacUI.cpp
+++ b/Import/GacUI.cpp
@@ -1535,6 +1535,13 @@ GuiDialogBase
 							return dynamic_cast<GuiWindow*>(host);
 						}
 					}
+					else if (auto composition = dynamic_cast<GuiGraphicsComposition*>(rootObject))
+					{
+						if (auto host = composition->GetRelatedControlHost())
+						{
+							return dynamic_cast<GuiWindow*>(host);
+						}
+					}
 				}
 				return nullptr;
 			}
@@ -4409,7 +4416,6 @@ GuiPopup
 				INativeWindow* window=GetNativeWindow();
 				if(window)
 				{
-					Size size=window->GetBounds().GetSize();
 					Rect bounds(Point(0, 0), control->GetBoundsComposition()->GetBounds().GetSize());
 					ShowPopup(control, bounds, preferredTopBottomSide);
 				}
@@ -33665,6 +33671,12 @@ GuiFlowComposition
 				alignment = value;
 				needUpdate = true;
 			}
+
+			void GuiFlowComposition::ForceCalculateSizeImmediately()
+			{
+				GuiBoundsComposition::ForceCalculateSizeImmediately();
+				UpdateFlowItemBounds(true);
+			}
 			
 			Size GuiFlowComposition::GetMinPreferredClientSize()
 			{
@@ -34179,6 +34191,12 @@ GuiStackComposition
 				padding = value;
 				EnsureStackItemVisible();
 			}
+
+			void GuiStackComposition::ForceCalculateSizeImmediately()
+			{
+				GuiBoundsComposition::ForceCalculateSizeImmediately();
+				UpdateStackItemBounds();
+			}
 			
 			Size GuiStackComposition::GetMinPreferredClientSize()
 			{
diff --git a/Import/GacUI.h b/Import/GacUI.h
index 96c5823a..80f8b1f2 100644
--- a/Import/GacUI.h
+++ b/Import/GacUI.h
@@ -6886,7 +6886,8 @@ Stack Compositions
 				/// <summary>Set the stack item padding.</summary>
 				/// <param name="value">The stack item padding.</param>
 				void								SetPadding(vint value);
-
+				
+				void								ForceCalculateSizeImmediately()override;
 				Size								GetMinPreferredClientSize()override;
 				Rect								GetBounds()override;
 				
@@ -7200,7 +7201,8 @@ Flow Compositions
 				/// <summary>Set the alignment for rows.</summary>
 				/// <param name="value">The alignment.</param>
 				void								SetAlignment(FlowAlignment value);
-
+				
+				void								ForceCalculateSizeImmediately()override;
 				Size								GetMinPreferredClientSize()override;
 				Rect								GetBounds()override;
 			};