diff --git a/base-test/org.eclipse.jdt.groovy.core.tests.builder/src/org/eclipse/jdt/core/groovy/tests/search/ClosureInferencingTests.java b/base-test/org.eclipse.jdt.groovy.core.tests.builder/src/org/eclipse/jdt/core/groovy/tests/search/ClosureInferencingTests.java
index cfa5ec8a7b..23c3ee5a32 100644
--- a/base-test/org.eclipse.jdt.groovy.core.tests.builder/src/org/eclipse/jdt/core/groovy/tests/search/ClosureInferencingTests.java
+++ b/base-test/org.eclipse.jdt.groovy.core.tests.builder/src/org/eclipse/jdt/core/groovy/tests/search/ClosureInferencingTests.java
@@ -1262,7 +1262,7 @@ public void testWithAndClosure8() {
     }
 
     @Test // https://github.com/groovy/groovy-eclipse/issues/1230
-    public void testWithAndClosure8a() {
+    public void testWithAndClosure9() {
         //@formatter:off
         String contents =
             "class C {\n" +
@@ -1283,6 +1283,24 @@ public void testWithAndClosure8a() {
         assertType(contents, "x", "java.lang.Object");
     }
 
+    @Test // https://github.com/groovy/groovy-eclipse/issues/1277
+    public void testWithAndClosure10() {
+        //@formatter:off
+        String contents =
+            "class C {\n" +
+            "  Number x\n" +
+            "  def m() {\n" +
+            "    [x:'map'].with {\n" +
+            "      getX()\n" +
+            "    }\n" +
+            "  }\n" +
+            "}\n";
+        //@formatter:on
+
+        assertDeclaringType(contents, "getX", "C");
+        assertType(contents, "getX", "java.lang.Number");
+    }
+
     @Test
     public void testClosureReturnType1() {
         //@formatter:off
diff --git a/base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/basic/GroovySimpleTests.java b/base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/basic/GroovySimpleTests.java
index d4f1756376..3b4e2af726 100644
--- a/base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/basic/GroovySimpleTests.java
+++ b/base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/basic/GroovySimpleTests.java
@@ -5208,6 +5208,50 @@ public void testGroovyPropertyAccessors5() {
             "  public void setFlag(boolean arg0);\n");
     }
 
+    @Test
+    public void testGroovyPropertyAccessors6() {
+        //@formatter:off
+        String[] sources = {
+            "G.groovy",
+            "class G {\n" +
+            "  def p = 'G'\n" +
+            "  void test() {\n" +
+            "    [p:'map'].with {\n" +
+            "      print getP()\n" + // resolves to enclosing class not map
+            "    }\n" +
+            "  }\n" +
+            "  static main(args) {\n" +
+            "    new G().test()\n" +
+            "  }\n" +
+            "}\n",
+        };
+        //@formatter:on
+
+        runConformTest(sources, "G");
+    }
+
+    @Test
+    public void testGroovyPropertyAccessors7() {
+        //@formatter:off
+        String[] sources = {
+            "G.groovy",
+            "class G {\n" +
+            "  def p = 'G'\n" +
+            "  void test() {\n" +
+            "    [p:'map'].with {\n" +
+            "      print p\n" + // resolves to map not enclosing class
+            "    }\n" +
+            "  }\n" +
+            "  static main(args) {\n" +
+            "    new G().test()\n" +
+            "  }\n" +
+            "}\n",
+        };
+        //@formatter:on
+
+        runConformTest(sources, "map");
+    }
+
     @Test // check no duplicate created for 'String getProp'
     public void testGroovyPropertyAccessors_ErrorCases1() {
         //@formatter:off
diff --git a/base/org.eclipse.jdt.groovy.core/src/org/eclipse/jdt/groovy/search/SimpleTypeLookup.java b/base/org.eclipse.jdt.groovy.core/src/org/eclipse/jdt/groovy/search/SimpleTypeLookup.java
index 56399fdd58..e4dec2362b 100644
--- a/base/org.eclipse.jdt.groovy.core/src/org/eclipse/jdt/groovy/search/SimpleTypeLookup.java
+++ b/base/org.eclipse.jdt.groovy.core/src/org/eclipse/jdt/groovy/search/SimpleTypeLookup.java
@@ -619,7 +619,9 @@ protected ASTNode findDeclaration(final String name, final ClassNode declaringTy
             return findDeclaration(name, VariableScope.OBJECT_CLASS_NODE, isLhsExpression, isStaticExpression, 0, methodCallArgumentTypes);
         }
 
-        if (!isLhsExpression && methodCallArgumentTypes != null) {
+        boolean isMethodCall = (!isLhsExpression && methodCallArgumentTypes != null);
+
+        if (isMethodCall) {
             if (!isStaticExpression && declaringType.implementsInterface(ClassHelper.GROOVY_INTERCEPTABLE_TYPE)) {
                 return declaringType.getMethod("invokeMethod", new Parameter[] {new Parameter(VariableScope.STRING_CLASS_NODE, "name"), new Parameter(VariableScope.OBJECT_CLASS_NODE, "args")});
             }
@@ -631,7 +633,7 @@ protected ASTNode findDeclaration(final String name, final ClassNode declaringTy
             // name may still map to something that is callable; keep looking
         }
 
-        if (!isStaticExpression && directFieldAccess == 0 && isOrImplements(declaringType, VariableScope.MAP_CLASS_NODE)) {
+        if (!isMethodCall && !isStaticExpression && directFieldAccess == 0 && isOrImplements(declaringType, VariableScope.MAP_CLASS_NODE)) {
             ClassNode resolvedType;
             if (isLhsExpression) {
                 resolvedType = VariableScope.VOID_CLASS_NODE;
@@ -706,8 +708,7 @@ protected ASTNode findDeclaration(final String name, final ClassNode declaringTy
                 }
             }).findFirst();
             if (mopMethod.isPresent()) {
-                return mopMethod.map(mm -> (isLhsExpression || methodCallArgumentTypes == null)
-                    ? createDynamicProperty(name, VariableScope.OBJECT_CLASS_NODE, declaringType, isStaticExpression) : mm).get();
+                return mopMethod.map(mm -> !isMethodCall ? createDynamicProperty(name, VariableScope.OBJECT_CLASS_NODE, declaringType, isStaticExpression) : mm).get();
             }
         }