The repro for the issue is in first comment and the comment 8 mentions about this being fixed in 4.2 which I was able to verify as my Ubuntu vm has 4.2.1
Currently the 'tests' run only on dnx451, which means only Mono...we should investigate to see if we can make the tests run on CoreClr to avoid hitting these issues...
The following issue filed on Mono describes the problem https://bugzilla.xamarin.com/show_bug.cgi?id=30604
Note that Travis CI runs on Mono 4.0.5 version
The repro for the issue is in first comment and the comment 8 mentions about this being fixed in 4.2 which I was able to verify as my Ubuntu vm has 4.2.1
Currently the 'tests' run only on dnx451, which means only Mono...we should investigate to see if we can make the tests run on CoreClr to avoid hitting these issues...
@muratg