MultiDocumentStoreTest.testInvalidateCache failing for Mongo

Tests run: 6, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 1.255 sec <<< FAILURE!
testInvalidateCache[0](org.apache.jackrabbit.oak.plugins.document.MultiDocumentStoreTest)  Time elapsed: 0.343 sec  <<< FAILURE!
java.lang.AssertionError: modcount should have incremented again expected:<3> but was:<2>
        at org.junit.Assert.fail(Assert.java:93)
        at org.junit.Assert.failNotEquals(Assert.java:647)
        at org.junit.Assert.assertEquals(Assert.java:128)
        at org.junit.Assert.assertEquals(Assert.java:472)
        at org.apache.jackrabbit.oak.plugins.document.MultiDocumentStoreTest.testInvalidateCache(MultiDocumentStoreTest.java:184)