- HTTP/2 connection health check is enabled by default in all Kubernetes clients to fix persistently broken connections (https://github.com/kubernetes/client-go/issues/374). If needed, users can tune the feature via the HTTP2_READ_IDLE_TIMEOUT_SECONDS and HTTP2_PING_TIMEOUT_SECONDS environment variables. The feature is disabled if HTTP2_READ_IDLE_TIMEOUT_SECONDS...

* Timeout docker queries to prevent node going NotReady indefinitely. ([#56967](https://github.com/kubernetes/kubernetes/pull/56967), [@jsravn](https://github.com/jsravn))
* Fix bug allowing garbage collector to enter a broken state that could only be fixed by restarting the controller-manager. ([#61201](https://github.com/kubernetes/kubernetes/pull/61201), [@jennybuckley](https://github.com/jennybuckley))

- Expose docker registry config for addons used in Juju deployments ([#66092](https://github.com/kubernetes/kubernetes/pull/66092), [@kwmonroe](https://github.com/kwmonroe))
- `RunAsGroup` which has been broken since 1.10, now works. ([#65926](https://github.com/kubernetes/kubernetes/pull/65926), [@Random-Liu](https://github.com/Random-Liu))

- Fix: detach azure disk broken on Azure Stack ([#94885](https://github.com/kubernetes/kubernetes/pull/94885), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider]

* Fixed bug allowing garbage collector to enter a broken state that could only be fixed by restarting the controller-manager. ([#61201](https://github.com/kubernetes/kubernetes/pull/61201), [@jennybuckley](https://github.com/jennybuckley))

* Add support for adding/removing finalizer depending on PVC protection feature gate ([#61370](https://github.com/kubernetes/kubernetes/pull/61370), [@gnufied](https://github.com/gnufied))
* Fix bug allowing garbage collector to enter a broken state that could only be fixed by restarting the controller-manager. ([#61201](https://github.com/kubernetes/kubernetes/pull/61201), [@jennybuckley](https://github.com/jennybuckley))

* Fix broken detection of non-root image user ID ([#78261](https://github.com/kubernetes/kubernetes/pull/78261), [@tallclair](https://github.com/tallclair))

* Fix `kubectl logs -f` for windows server containers. ([#81747](https://github.com/kubernetes/kubernetes/pull/81747), [@Random-Liu](https://github.com/Random-Liu))
* Fix VMSS LoadBalancer backend pools so that the network won't be broken when instances are upgraded to latest model ([#81411](https://github.com/kubernetes/kubernetes/pull/81411), [@nilo19](https://github.com/nilo19))

    * As with the existing Wheezy image on GCE, docker is expected to already be installed in the image.
* Mark kube-push.sh as broken ([#25095](https://github.com/kubernetes/kubernetes/pull/25095), [@ihmccreery](https://github.com/ihmccreery))

   ([#113329](https://github.com/kubernetes/kubernetes/pull/113329), [@RomanBednar](https://github.com/RomanBednar))
- '`registered_metric_total` will now report the number of metrics broken down by
  stability level and deprecated version.'
   ([#112907](https://github.com/kubernetes/kubernetes/pull/112907), [@logicalhan](https://github.com/logicalhan))