Is seems that despite the fact that all the jobs involved were designed to preserve proper patch ordering, there can be cases where patches trigger Jenkins jobs in the wrong order, which in turn end up putting the patches in the wrong order into the CQ. This in turn, causes the CQ to fail accurately detecting the patches that cause issues.
Here is en example of such an occurance. The following patches were merged in the order specified below:
The standard-enqueue runs putting them in the CQ however, seem to have run in a different order:
This resulted in CQ 'add' command running in the wrong order:
We need to come up with a way to make the system properly preserver order.