diff --git a/toonz/sources/toonz/xshrowviewer.cpp b/toonz/sources/toonz/xshrowviewer.cpp
index 9c922e9..3e89693 100644
--- a/toonz/sources/toonz/xshrowviewer.cpp
+++ b/toonz/sources/toonz/xshrowviewer.cpp
@@ -743,6 +743,8 @@ bool RowArea::event(QEvent *event) {
       QToolTip::showText(mapToGlobal(m_pos), m_tooltip);
     else
       QToolTip::hideText();
+  } else if (event->type() == QEvent::Leave) {
+    m_showOnionToSet = None;
   }
   return QWidget::event(event);
 }