2 files changed, 6 insertions, 3 deletions
diff --git a/tools/designer/src/components/formeditor/formwindow_widgetstack.cpp b/tools/designer/src/components/formeditor/formwindow_widgetstack.cpp
index 7270628..58127b0 100644
--- a/tools/designer/src/components/formeditor/formwindow_widgetstack.cpp
+++ b/tools/designer/src/components/formeditor/formwindow_widgetstack.cpp
@@ -57,16 +57,20 @@ using namespace qdesigner_internal;
 FormWindowWidgetStack::FormWindowWidgetStack(QObject *parent) :
     QObject(parent),
     m_formContainer(new QWidget),
-    m_formContainerLayout(new QVBoxLayout),
+    m_formContainerLayout(new QStackedLayout),
     m_layout(new QStackedLayout)
 {
     m_layout->setMargin(0);
     m_layout->setSpacing(0);
     m_layout->setStackingMode(QStackedLayout::StackAll);
 
+    // We choose a QStackedLayout as immediate layout for
+    // the form windows as it ignores the sizePolicy of
+    // its child (for example, Fixed would cause undesired side effects).
     m_formContainerLayout->setMargin(0);
     m_formContainer->setObjectName(QLatin1String("formContainer"));
     m_formContainer->setLayout(m_formContainerLayout);
+    m_formContainerLayout->setStackingMode(QStackedLayout::StackAll);
     // System settings might have different background colors, autofill them
     // (affects for example mainwindow status bars)
     m_formContainer->setAutoFillBackground(true);
diff --git a/tools/designer/src/components/formeditor/formwindow_widgetstack.h b/tools/designer/src/components/formeditor/formwindow_widgetstack.h
index 92323c5..f21c4f0 100644
--- a/tools/designer/src/components/formeditor/formwindow_widgetstack.h
+++ b/tools/designer/src/components/formeditor/formwindow_widgetstack.h
@@ -51,7 +51,6 @@ QT_BEGIN_NAMESPACE
 class QDesignerFormWindowToolInterface;
 
 class QStackedLayout;
-class QVBoxLayout;
 class QWidget;
 
 namespace qdesigner_internal {
@@ -92,7 +91,7 @@ protected:
 private:
     QList<QDesignerFormWindowToolInterface*> m_tools;
     QWidget *m_formContainer;
-    QVBoxLayout *m_formContainerLayout;
+    QStackedLayout *m_formContainerLayout;
     QStackedLayout *m_layout;
 };