diff --git a/PROJECT_PLAN.md b/PROJECT_PLAN.md
index d5a4a06..aa4a027 100644
--- a/PROJECT_PLAN.md
+++ b/PROJECT_PLAN.md
@@ -1238,8 +1238,8 @@ private:
 
 ### Milestone 6: Undo/Redo & Polish
 **Estimated Time:** 1-2 weeks
-- [ ] Integrate QUndoStack for all graph operations
-- [ ] Implement command classes for link, volume, node operations
+- [x] Integrate QUndoStack for all graph operations
+- [x] Implement command classes for link, volume, node operations
 - [ ] Add keyboard shortcuts (Delete, Ctrl+D, Ctrl+Z, etc.)
 - [ ] Implement context menus for nodes/canvas
 - [ ] Add copy/paste/duplicate functionality
diff --git a/src/gui/GraphEditorWidget.cpp b/src/gui/GraphEditorWidget.cpp
index 802661e..eecd3a4 100644
--- a/src/gui/GraphEditorWidget.cpp
+++ b/src/gui/GraphEditorWidget.cpp
@@ -904,7 +904,7 @@ void GraphEditorWidget::refreshMixerStrip(uint32_t nodeId, const Potato::NodeInf
         }
         const float volume = static_cast<float>(value) / 100.0f;
         const bool userMute = m_mixerUserMute.value(nodeId, false);
-        if (m_mixerFaders[nodeId]->isSliderDown()) {
+        if (m_mixerFaders[nodeId]->isSliderDown() || m_mixerFaders[nodeId]->property("pressValue").isValid()) {
             if (!m_mixerStartState.contains(nodeId)) {
                 const NodeVolumeState previous = m_mixerLastState.value(nodeId, NodeVolumeState{volume, userMute});
                 m_mixerStartState.insert(nodeId, previous);
@@ -932,6 +932,7 @@ void GraphEditorWidget::refreshMixerStrip(uint32_t nodeId, const Potato::NodeInf
         if (!m_mixerFaders.contains(nodeId)) {
             return;
         }
+        m_mixerFaders[nodeId]->setProperty("pressValue", QVariant());
         const float volume = static_cast<float>(m_mixerFaders[nodeId]->value()) / 100.0f;
         const bool userMute = m_mixerUserMute.value(nodeId, false);
         const NodeVolumeState previous = m_mixerStartState.value(nodeId, m_mixerLastState.value(nodeId, NodeVolumeState{volume, userMute}));
diff --git a/src/gui/PipeWireGraphModel.cpp b/src/gui/PipeWireGraphModel.cpp
index de76004..a4973f1 100644
--- a/src/gui/PipeWireGraphModel.cpp
+++ b/src/gui/PipeWireGraphModel.cpp
@@ -162,7 +162,9 @@ QWidget *PipeWireGraphModel::nodeWidget(QtNodes::NodeId nodeId) const
         m_controller->setNodeVolume(pipewireId, volume, next.mute);
         auto *self = const_cast<PipeWireGraphModel*>(this);
         self->setNodeVolumeState(pipewireId, next, false);
-        if (!slider->isSliderDown() && !m_inlineStartState.contains(pipewireId)) {
+        if (!slider->isSliderDown()
+            && !m_inlineStartState.contains(pipewireId)
+            && !slider->property("pressValue").isValid()) {
             self->emitNodeVolumeChanged(pipewireId, previous, next);
         }
     };
@@ -186,6 +188,7 @@ QWidget *PipeWireGraphModel::nodeWidget(QtNodes::NodeId nodeId) const
         }
         const NodeVolumeState previous = m_inlineStartState.value(pipewireId, m_nodeVolumeState.value(pipewireId));
         m_inlineStartState.remove(pipewireId);
+        slider->setProperty("pressValue", QVariant());
         const float volume = static_cast<float>(slider->value()) / 100.0f;
         const NodeVolumeState next{volume, muteButton->isChecked()};
         auto *self = const_cast<PipeWireGraphModel*>(this);