diff --git a/platform/lang-impl/src/com/intellij/codeInsight/lookup/impl/LookupUi.java b/platform/lang-impl/src/com/intellij/codeInsight/lookup/impl/LookupUi.java
index 8e1bdb386802..ab1890901145 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/lookup/impl/LookupUi.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/lookup/impl/LookupUi.java
@@ -24,6 +24,7 @@ import com.intellij.codeInsight.lookup.LookupElementAction;
 import com.intellij.featureStatistics.FeatureUsageTracker;
 import com.intellij.icons.AllIcons;
 import com.intellij.ide.DataManager;
+import com.intellij.ide.IdeEventQueue;
 import com.intellij.ide.ui.UISettings;
 import com.intellij.injected.editor.EditorWindow;
 import com.intellij.openapi.actionSystem.*;
@@ -339,7 +340,7 @@ class LookupUi {
           mainPanel.setSize(size);
           mainPanel.validate();
 
-          if (!myLookup.myResizePending) {
+          if (IdeEventQueue.getInstance().getTrueCurrentEvent().getID() == MouseEvent.MOUSE_DRAGGED) {
             Dimension preferredSize = preferredLayoutSize(null);
             if (preferredSize.width != size.width) {
               UISettings.getInstance().setMaxLookupWidth(Math.max(500, size.width));