diff --git a/src/Gui/QuantitySpinBox.cpp b/src/Gui/QuantitySpinBox.cpp
index 98749a06b0..b7febd34e6 100644
--- a/src/Gui/QuantitySpinBox.cpp
+++ b/src/Gui/QuantitySpinBox.cpp
@@ -52,6 +52,7 @@
 #include "Command.h"
 #include "Dialogs/DlgExpressionInput.h"
 #include "Tools.h"
+#include "Widgets.h"
 
 
 using namespace Gui;
@@ -618,6 +619,7 @@ void QuantitySpinBox::openFormulaDialog()
     QPoint pos = mapToGlobal(QPoint(0,0));
     box->move(pos-box->expressionPosition());
     box->setExpressionInputSize(width(), height());
+    Gui::adjustDialogPosition(box);
 
     Q_EMIT showFormulaDialog(true);
 }
diff --git a/src/Gui/SpinBox.cpp b/src/Gui/SpinBox.cpp
index ca0bae7f60..89287b4f54 100644
--- a/src/Gui/SpinBox.cpp
+++ b/src/Gui/SpinBox.cpp
@@ -40,6 +40,7 @@
 #include "Command.h"
 #include "Dialogs/DlgExpressionInput.h"
 #include "QuantitySpinBox_p.h"
+#include "Widgets.h"
 
 
 using namespace Gui;
@@ -206,6 +207,7 @@ void ExpressionSpinBox::openFormulaDialog()
     QPoint pos = spinbox->mapToGlobal(QPoint(0,0));
     box->move(pos-box->expressionPosition());
     box->setExpressionInputSize(spinbox->width(), spinbox->height());
+    Gui::adjustDialogPosition(box);
 }
 
 bool ExpressionSpinBox::handleKeyEvent(const QString& text)
diff --git a/src/Gui/Widgets.cpp b/src/Gui/Widgets.cpp
index 7bf54da9e9..72920e3ac7 100644
--- a/src/Gui/Widgets.cpp
+++ b/src/Gui/Widgets.cpp
@@ -55,6 +55,7 @@
 #include "QuantitySpinBox_p.h"
 #include "Tools.h"
 #include "Dialogs/ui_DlgTreeWidget.h"
+#include "MainWindow.h"
 
 using namespace Gui;
 using namespace App;
@@ -1606,6 +1607,7 @@ void ExpLineEdit::openFormulaDialog()
     QPoint pos = mapToGlobal(QPoint(0,0));
     box->move(pos-box->expressionPosition());
     box->setExpressionInputSize(width(), height());
+    Gui::adjustDialogPosition(box);
 }
 
 void ExpLineEdit::finishFormulaDialog()
@@ -1663,5 +1665,54 @@ bool ButtonGroup::exclusive() const
     return _exclusive;
 }
 
+namespace Gui {
+
+void adjustDialogPosition(QDialog* dialog) {
+    if (!dialog) {
+        return;
+    }
+    const MainWindow* mw = getMainWindow();
+    if (!mw) {
+        return;
+    }
+    
+    dialog->adjustSize(); // ensure correct size
+
+    const QRect mainWindowRect{ mw->mapToGlobal(QPoint(0, 0)), mw->size() };
+    const QRect dialogRect{ dialog->frameGeometry() };
+
+    const bool isFullyInside = mainWindowRect.contains(dialogRect);
+    if (isFullyInside) {
+        return;
+    }
+
+    const bool isCompletelyOutside = !mainWindowRect.intersects(dialogRect);
+    if (isCompletelyOutside) {
+        return;
+    }
+
+    const int margin = 5;
+    const QRect availableArea = mainWindowRect.adjusted(
+        margin, margin, -margin, -margin
+    );
+
+    QPoint adjustedTopLeft = dialogRect.topLeft();
+
+    adjustedTopLeft.setX(std::clamp(
+        adjustedTopLeft.x(),
+        availableArea.left(),
+        availableArea.right() - dialogRect.width()
+    ));
+
+    adjustedTopLeft.setY(std::clamp(
+        adjustedTopLeft.y(),
+        availableArea.top(),
+        availableArea.bottom() - dialogRect.height()
+    ));
+
+    dialog->move(adjustedTopLeft);
+}
+
+}
 
 #include "moc_Widgets.cpp"
diff --git a/src/Gui/Widgets.h b/src/Gui/Widgets.h
index f086c28f91..34bfe251fe 100644
--- a/src/Gui/Widgets.h
+++ b/src/Gui/Widgets.h
@@ -613,6 +613,15 @@ private:
     bool _exclusive;
 };
 
+/**
+ * Adjusts the position of the given dialog to ensure it remains within the bounds of the main window.
+ * This helps prevent dialogs from appearing partially or fully off-screen relative to the main application window.
+ * 
+ * This function shall be invoked after the dialog has been shown (using show()) or its position or size has changed.
+ * Exception: If the dialog is modal, this function should be called before the dialog is called with exec().
+ */
+void adjustDialogPosition(QDialog* dialog);
+
 } // namespace Gui
 
 #endif // GUI_WIDGETS_H
diff --git a/src/Gui/propertyeditor/PropertyItem.cpp b/src/Gui/propertyeditor/PropertyItem.cpp
index 7e0098a46c..c90b4870a6 100644
--- a/src/Gui/propertyeditor/PropertyItem.cpp
+++ b/src/Gui/propertyeditor/PropertyItem.cpp
@@ -1645,6 +1645,7 @@ void VectorListWidget::buttonClicked()
         setValue(data);
     });
 
+    Gui::adjustDialogPosition(dlg);
     dlg->exec();
 }