diff --git a/toonz/sources/toonz/filmstrip.cpp b/toonz/sources/toonz/filmstrip.cpp
index 0067ed4..bc67b15 100644
--- a/toonz/sources/toonz/filmstrip.cpp
+++ b/toonz/sources/toonz/filmstrip.cpp
@@ -1898,6 +1898,7 @@ void Filmstrip::setOrientation(bool isVertical) {
     m_frameArea->horizontalScrollBar()->setObjectName("LevelStripScrollBar");
   }
   m_frames->setOrientation(m_isVertical);
+  dynamic_cast<TPanel*>(parentWidget())->setCanFixWidth(m_isVertical);
 }
 
 // SaveLoadQSettings
diff --git a/toonz/sources/toonzqt/docklayout.cpp b/toonz/sources/toonzqt/docklayout.cpp
index 65cd369..f42d1b6 100644
--- a/toonz/sources/toonzqt/docklayout.cpp
+++ b/toonz/sources/toonzqt/docklayout.cpp
@@ -424,7 +424,7 @@ void DockLayout::applyTransform(const QTransform &transform) {
 // check if the region will be with fixed width
 bool Region::checkWidgetsToBeFixedWidth(std::vector<QWidget *> &widgets) {
   if (m_item) {
-    if (  // m_item->objectName() == "FilmStrip" ||
+    if (  (m_item->objectName() == "FilmStrip" && m_item->getCanFixWidth()) ||
         m_item->objectName() == "StyleEditor") {
       widgets.push_back(m_item);
       return true;
diff --git a/toonz/sources/toonzqt/docklayout.h b/toonz/sources/toonzqt/docklayout.h
index 842a46a..6502aad 100644
--- a/toonz/sources/toonzqt/docklayout.h
+++ b/toonz/sources/toonzqt/docklayout.h
@@ -171,6 +171,9 @@ class DVAPI DockWidget : public QFrame {
 public:
   void maximizeDock();
 
+  bool getCanFixWidth() { return m_canFixWidth; }
+  void setCanFixWidth(bool fixed) { m_canFixWidth = fixed; }
+
 protected:
   // Private attributes for dragging purposes
   bool m_floating;   // Whether this window is floating or docked
@@ -186,6 +189,12 @@ protected:
   // Maximization
   bool m_maximized;
 
+  // Level Strip and Style Editor use a fixed width on 
+  // window resize to minimize user frustration
+  // This variable is only used by Level Strip right now.
+  // This is only true if the level strip is vertical.
+  bool m_canFixWidth = false;
+
 private:
   QPoint m_dragInitialPos;
   QPoint m_dragMouseInitialPos;