I noticed this today when looking at component readiness.  A ~5% decrease in instability may seem minor, but these can certainly add up.  This test passed 713 times in a row on 4.14.  You can see today's failure here.

Details below:

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Component Readiness has found a potential regression in [sig-cluster-lifecycle] pathological event should not see excessive Back-off restarting failed containers.

Probability of significant regression: 99.96%

Sample (being evaluated) Release: 4.15
Start Time: 2024-01-17T00:00:00Z
End Time: 2024-01-23T23:59:59Z
Success Rate: 94.83%
Successes: 55
Failures: 3
Flakes: 0

Base (historical) Release: 4.14
Start Time: 2023-10-04T00:00:00Z
End Time: 2023-10-31T23:59:59Z
Success Rate: 100.00%
Successes: 713
Failures: 0
Flakes: 4

View the test details report at https://sippy.dptools.openshift.org/sippy-ng/component_readiness/test_details?arch=amd64&arch=amd64&baseEndTime=2023-10-31%2023%3A59%3A59&baseRelease=4.14&baseStartTime=2023-10-04%2000%3A00%3A00&capability=Other&component=Unknown&confidence=95&environment=ovn%20upgrade-minor%20amd64%20gcp%20rt&excludeArches=arm64%2Cheterogeneous%2Cppc64le%2Cs390x&excludeClouds=openstack%2Cibmcloud%2Clibvirt%2Covirt%2Cunknown&excludeVariants=hypershift%2Cosd%2Cmicroshift%2Ctechpreview%2Csingle-node%2Cassisted%2Ccompact&groupBy=cloud%2Carch%2Cnetwork&ignoreDisruption=true&ignoreMissing=false&minFail=3&network=ovn&network=ovn&pity=5&platform=gcp&platform=gcp&sampleEndTime=2024-01-23%2023%3A59%3A59&sampleRelease=4.15&sampleStartTime=2024-01-17%2000%3A00%3A00&testId=openshift-tests-upgrade%3A37f1600d4f8d75c47fc5f575025068d2&testName=%5Bsig-cluster-lifecycle%5D%20pathological%20event%20should%20not%20see%20excessive%20Back-off%20restarting%20failed%20containers&upgrade=upgrade-minor&upgrade=upgrade-minor&variant=rt&variant=rt