Possible bug in the Practice Tests engine

I did couple of 25-questions practices of Microsoft 70-642 certification. I did, exactly, 7 tests since yesterday. This morning, I did an 8th one and found out that there is a question appearing twice in the batch and expecting two different answers.

The test question is : **** What is the default quota size limit [in GB] on the default Domain Replication Folder on Windows Server
2008? ****

If someone can communicate by email with me, I could, send in a PDF file, the answer result of the 25 questions.