fix submitting with finished transaction id

platform/core-impl/src/com/intellij/openapi/application/TransactionGuardImpl.java

@@ -83,8 +83,15 @@ public class TransactionGuardImpl extends TransactionGuard {
   }
 
   @NotNull
-  private Queue<Transaction> getQueue(@Nullable TransactionIdImpl prevTransaction) {
-    return prevTransaction == null ? myQueue : prevTransaction.myQueue;
+  private Queue<Transaction> getQueue(@Nullable TransactionIdImpl transaction) {
+    if (transaction == null) {
+      return myQueue;
+    }
+    if (myCurrentTransaction != null && transaction.myStartCounter > myCurrentTransaction.myStartCounter) {
+      // transaction is finished already, it makes no sense to add to its queue
+      return myCurrentTransaction.myQueue;
+    }
+    return transaction.myQueue;
   }
 
   private void pollQueueLater() {

platform/platform-tests/testSrc/com/intellij/application/TransactionTest.groovy

@@ -160,4 +160,20 @@ class TransactionTest extends LightPlatformTestCase {
     }
   }
 
+  public void "test submit with finished transaction id"() {
+    TransactionGuard.submitTransaction testRootDisposable, {
+      log << '1'
+      TransactionId id = null
+      TransactionGuard.submitTransaction testRootDisposable, {
+        log << '2'
+        id = guard.contextTransaction
+      }
+      SwingUtilities.invokeLater {
+        guard.submitMergeableTransaction testRootDisposable, id, { log << '3' }
+      }
+      UIUtil.dispatchAllInvocationEvents()
+      assert log == ['1', '2', '3']
+    }
+  }
+
 }