Master Data Services 2014 - Business Rule Error - Conversion failed when checking date attribute is Empty / Blank

I have the same issue of conversion date when checking whether date attribute is empty: "Blank" in business rule in the Master Data Services 2014 (SQL Server 2014 SP1 version 12.0.4213.0)

I thought the SP1 have resolved the problem but i still have the issue and don't know how to work around.

Regards,