Hi Edoardo,
Thanks again for contacting us. After investigating further, I found that it is an issue with JustMock and I included a task for it in PITS which you can follow here:
http://www.telerik.com/support/pits.aspx#/public/justmock/11109
It will be fixed in the coming release. In the meantime, you can just move the block to a different test method and it should work as expected:
Kind regards,
Ricky
the Telerik team
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