I think that
https://issues.jenkins-ci.org/browse/JENKINS-26077 is not fixed yet in the latest jenkins release.
I am using the latest Jenkins 1.642 with xUnit plugin 1.99 and Robot Framework plugin 1.6.2.
Could not post to the Jenkins JIRA (account signup disabled due to spam problems...), so I um posting here
I am using a Matrix Job, which is publishing test results with xUnit in one case (matrix axis match) and publishing test results with Robot Framework in another case (using flexible publish plugin)
It could be that the flexible Publish is not fully "disabling" the not needed publisher, but is displaying both in every case
Does anyone else experience that problem?