diff --git a/java/java-analysis-impl/src/com/intellij/codeInspection/RedundantLambdaCodeBlockInspection.java b/java/java-analysis-impl/src/com/intellij/codeInspection/RedundantLambdaCodeBlockInspection.java
index 0812914d95d3..829872f2010d 100644
--- a/java/java-analysis-impl/src/com/intellij/codeInspection/RedundantLambdaCodeBlockInspection.java
+++ b/java/java-analysis-impl/src/com/intellij/codeInspection/RedundantLambdaCodeBlockInspection.java
@@ -87,7 +87,8 @@ public class RedundantLambdaCodeBlockInspection extends BaseJavaBatchLocalInspec
       if (psiExpression != null && !findCommentsOutsideExpression(body, psiExpression)) {
         if (LambdaUtil.isExpressionStatementExpression(psiExpression)) {
           final PsiCall call = LambdaUtil.treeWalkUp(body);
-          if (call != null && call.resolveMethod() != null) {
+          PsiMethod oldTarget;
+          if (call != null && (oldTarget = call.resolveMethod()) != null) {
             final int offsetInTopCall = body.getTextRange().getStartOffset() - call.getTextRange().getStartOffset();
             PsiCall copyCall = LambdaUtil.copyTopLevelCall(call);
             if (copyCall == null) return null;
@@ -96,7 +97,7 @@ public class RedundantLambdaCodeBlockInspection extends BaseJavaBatchLocalInspec
               final PsiElement parent = codeBlock.getParent();
               if (parent instanceof PsiLambdaExpression) {
                 codeBlock.replace(psiExpression);
-                if (copyCall.resolveMethod() == null || ((PsiLambdaExpression)parent).getFunctionalInterfaceType() == null) {
+                if (copyCall.resolveMethod() != oldTarget || ((PsiLambdaExpression)parent).getFunctionalInterfaceType() == null) {
                   return null;
                 }
               }
diff --git a/java/java-psi-api/src/com/intellij/psi/PsiFunctionalExpression.java b/java/java-psi-api/src/com/intellij/psi/PsiFunctionalExpression.java
index 727e3cfbfe90..48d80d3f083a 100644
--- a/java/java-psi-api/src/com/intellij/psi/PsiFunctionalExpression.java
+++ b/java/java-psi-api/src/com/intellij/psi/PsiFunctionalExpression.java
@@ -52,7 +52,7 @@ public interface PsiFunctionalExpression extends PsiExpression, Iconable, Naviga
    * 
    * When a generic functional interface is parameterized by wildcards, there are many different instantiations that could satisfy the wildcard
    * and produce different function types. Sometimes, it is possible to known from the context, such as the parameter types of a lambda expression, 
-   * which function type is intended (§15.27.3). Other times, it is necessary to pick one; in these circumstances, the bounds are used. 
+   * which function type is intended (15.27.3). Other times, it is necessary to pick one; in these circumstances, the bounds are used. 
    */
   @Nullable
   PsiType getGroundTargetType(PsiType functionalInterfaceType);
diff --git a/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/anonymous2lambda/afterSameOverload.java b/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/anonymous2lambda/afterSameOverload.java
index 41c66a5d0019..095483069464 100644
--- a/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/anonymous2lambda/afterSameOverload.java
+++ b/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/anonymous2lambda/afterSameOverload.java
@@ -9,6 +9,8 @@ class A {
   }
 
   public static void main(String[] args) {
-    submit((Runnable) () -> new A());
+    submit(() -> {
+      new A();
+    });
   }
 }
\ No newline at end of file
diff --git a/platform/diff-impl/src/com/intellij/diff/tools/util/BaseSyncScrollable.java b/platform/diff-impl/src/com/intellij/diff/tools/util/BaseSyncScrollable.java
index b70e744515a6..427bcd6ef25f 100644
--- a/platform/diff-impl/src/com/intellij/diff/tools/util/BaseSyncScrollable.java
+++ b/platform/diff-impl/src/com/intellij/diff/tools/util/BaseSyncScrollable.java
@@ -31,6 +31,8 @@ public abstract class BaseSyncScrollable implements SyncScrollSupport.SyncScroll
 
   @Override
   public int transfer(@NotNull Side baseSide, int line) {
+    if (line < 0) return -1;
+
     ScrollHelper helper = new ScrollHelper(baseSide, line);
     processHelper(helper);
 
@@ -43,10 +45,7 @@ public abstract class BaseSyncScrollable implements SyncScrollSupport.SyncScroll
     if (master2 == line) return slave2;
     if (master2 < line) return (line - master2) + slave2;
 
-    assert master1 != master2;
-
-    return Math.min(slave1 + (line - master1), slave2); // old
-    //return (line - master1) * (slave2 - slave1) / (master2 - master1) + slave1; // new
+    return Math.min(slave1 + (line - master1), slave2);
   }
 
   protected static class ScrollHelper {
diff --git a/platform/diff-impl/tests/com/intellij/diff/HeavyDiffTestCase.kt b/platform/diff-impl/tests/com/intellij/diff/HeavyDiffTestCase.kt
index 281498dce723..d03a7fc3d75d 100644
--- a/platform/diff-impl/tests/com/intellij/diff/HeavyDiffTestCase.kt
+++ b/platform/diff-impl/tests/com/intellij/diff/HeavyDiffTestCase.kt
@@ -33,10 +33,13 @@ abstract class HeavyDiffTestCase : DiffTestCase() {
   }
 
   override fun tearDown() {
-    projectFixture?.tearDown()
-    project = null
-
-    super.tearDown()
+    try {
+      project = null
+      projectFixture?.tearDown()
+    }
+    finally {
+      super.tearDown()
+    }
   }
 
   override fun runBare() {