OCMock: Mocking two different class methods interferes with other tests

In one my test files, I have a test function that does the following:

First test from testClassA.m

- (void)testStuffForClassABC
{

    id classFOO = OCMClassMock([FOO class]);
    OCMStub([classFOO alloc]).andReturn(classFOO);

    id classBAR = OCMClassMock([BAR class]);
    OCMStub([classBAR alloc]).andReturn(classBAR);

    //Do stuff

    classBAR = nil;
    classFOO = nil;
}

For some reason, the above will interfere with another test file. So if I run the tests independently from another, they will pass.

The affected test from another file.

Second test from testClassB.m

- (void)setUp
{
    [super setUp];
    // Put setup code here. This method is called before the invocation of each test method in the class.
    self.barObject = [[BAR alloc] init];
    self.fooObject = [[FOO alloc] initWithTox:self.barObject error:nil]; //This is now nil
//Can't even step in with the debugger. It skips over.
}

- (void)testInit
{
    XCTAssertNotNil(self.fooObject); //Now fails since it's nil.
}

I also tried calling stopMocking after the end of each test but that messes up the first test. I have a feeling that OCMock is not fully cleaning up the objects.

I also noticed there are limitations stated here however that is only for mocking the same class twice.