Hi guys,
These inconsistencies occur during test suites sometimes, or at least I have found that this is the case.
As a workaround, I have used the retry failed tests within the execution information in the test suit options. It will then run the failed test suits 3 times and if they still fail then you are sure that there is a problem.
If this does not work then it could be because of the test case before the failing test case.