Show that deserializing Map<String, Object> breaks :(

src/main/java/com/fasterxml/jackson/module/mrbean/AbstractTypeMaterializer.java

@@ -180,7 +180,9 @@ public JavaType resolveAbstractType(DeserializationConfig config, JavaType type)
         /* We won't be handling any container types (Collections, Maps and arrays),
          * Throwables or enums.
          */
-        if (type.isContainerType() || type.isPrimitive() || type.isEnumType() || type.isThrowable()) {
+        if (type.isContainerType() || type.isPrimitive() || type.isEnumType() || type.isThrowable() ||
+                type.getRawClass() == Number.class)
+        {
             return null;
         }
         Class<?> cls = type.getRawClass();

src/test/java/com/fasterxml/jackson/module/mrbean/TestMapStringObjectDeserialization.java

@@ -0,0 +1,42 @@
+package com.fasterxml.jackson.module.mrbean;
+
+import java.io.IOException;
+import java.util.Collections;
+import java.util.Map;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+public class TestMapStringObjectDeserialization
+    extends BaseTest
+{
+
+    /**
+     * Test simple Map deserialization works.
+     */
+    public void testMapWithMrbean() throws Exception
+    {
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.registerModule(new MrBeanModule());
+
+        runTest(mapper);
+    }
+
+    /**
+     * Test simple Map deserialization works.
+     */
+    public void testMapWithoutMrbean() throws Exception
+    {
+        ObjectMapper mapper = new ObjectMapper();
+
+        runTest(mapper);
+    }
+
+    void runTest(ObjectMapper mapper) throws IOException, JsonParseException, JsonMappingException
+    {
+        Map<String, Object> map = mapper.readValue("{\"test\":3 }", new TypeReference<Map<String, Object>>() {});
+        assertEquals(Collections.singletonMap("test", 3), map);
+    }
+}