Hi,
I got a similar issue with calling tests in debug and release variant. For me results don't even show up twice, instead it's a matter of coincidence, which results show up at all (individually for each single test case). In my case it's about nunit and gtests which write their result in xml files.
From this list I learnt, the best solution is to modify the xml files. So I added a line of sed to create individual test names for the debug and release tests.
That's not what I would call a great solution but it works.
BR,
Christoph