after the user presses Expand All in Usages view, subsequent usage searches...

after the user presses Expand All in Usages view, subsequent usage searches are shown as always expanded (IDEA-82552)
(cherry picked from commit fb286097)

platform/platform-resources-en/src/misc/registry.properties

@@ -214,7 +214,6 @@ projectView.showHierarchyErrors=true
 projectView.hide.dot.idea=true
 show.live.templates.in.completion=false
 documentation.component.editor.font=false
-find.usage.expand.all=false
 
 ide.completion.show.better.matching.classes=false
 # suppress inspection "UnusedProperty"
@@ -316,4 +315,4 @@ windows.jumplist.description=Enables JumpLists on Windows
 # suppress inspection "UnusedProperty"
 GRADLE.system.in.process=true
 # suppress inspection "UnusedProperty"
-GRADLE.system.in.process.description=Whether IDEA should use 'in-process' mode for interaction with gradle api
\ No newline at end of file
+GRADLE.system.in.process.description=Whether IDEA should use 'in-process' mode for interaction with gradle api

platform/usageView/src/com/intellij/usages/impl/UsageViewImpl.java

@@ -35,7 +35,6 @@ import com.intellij.openapi.ui.Messages;
 import com.intellij.openapi.ui.SimpleToolWindowPanel;
 import com.intellij.openapi.ui.Splitter;
 import com.intellij.openapi.util.*;
-import com.intellij.openapi.util.registry.Registry;
 import com.intellij.openapi.vfs.ReadonlyStatusHandler;
 import com.intellij.openapi.vfs.VfsUtilCore;
 import com.intellij.openapi.vfs.VirtualFile;
@@ -83,7 +82,6 @@ import java.util.concurrent.atomic.AtomicInteger;
  */
 public class UsageViewImpl implements UsageView, UsageModelTracker.UsageModelTrackerListener {
   @NonNls public static final String SHOW_RECENT_FIND_USAGES_ACTION_ID = "UsageView.ShowRecentFindUsages";
-  private static final boolean EXPAND_ALL = Registry.is("find.usage.expand.all");
 
   private final UsageNodeTreeBuilder myBuilder;
   private final MyPanel myRootPanel;
@@ -510,6 +508,7 @@ public class UsageViewImpl implements UsageView, UsageModelTracker.UsageModelTra
       @Override
       public void expandAll() {
         UsageViewImpl.this.expandAll();
+        UsageViewSettings.getInstance().setExpanded(true);
       }
 
       @Override
@@ -520,6 +519,7 @@ public class UsageViewImpl implements UsageView, UsageModelTracker.UsageModelTra
       @Override
       public void collapseAll() {
         UsageViewImpl.this.collapseAll();
+        UsageViewSettings.getInstance().setExpanded(false);
       }
 
       @Override
@@ -1068,7 +1068,7 @@ public class UsageViewImpl implements UsageView, UsageModelTracker.UsageModelTra
             return;
           }
           showNode(firstUsageNode);
-          if (EXPAND_ALL) {
+          if (UsageViewSettings.getInstance().isExpanded()) {
             expandAll();
           }
         }