- Fixed a bug where an API group's path was not unregistered from the API server's root paths when the group was deleted. ([#121283](https://github.com/kubernetes/kubernetes/pull/121283), [@tnqn](https://github.com/tnqn)) [SIG API Machinery and Testing]

- Kubeadm: Fixed a bug where the PublicKeysECDSA feature gate was not respected when generating kubeconfig files. ([#125388...

- Kubeadm: fix a regression where the KubeletConfiguration is not properly downloaded during "kubeadm upgrade" commands...

* Requests with invalid credentials no longer match audit policy rules where users or groups are set, correcting a problem where authorized requests were getting through. ([#59398](https://github.com/kubernetes/kubernetes/pull/59398), [@CaoShuFeng](https://github.com/CaoShuFeng))

- Kubeadm: fix a bug where post upgrade to 1.18.x, nodes cannot join the cluster due to missing RBAC ([#89537](https://github.com/kubernetes/kubernetes/pull/89537), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

- Fix a bug in cronjob controller where already created jobs may be missing from the status. ([#120649](https://github.com/kubernetes/kubernetes/pull/120649), [@andrewsykim](https://github.com/andrewsykim)) [SIG Apps]

    *  - vSphere cloud provider (VCP) uses OS hostname and not vSphere Inventory VM Name.
    *    That means, now  VCP can handle cases where user changes VM inventory name.
    * - VCP can handle cases where VM migrates to other ESXi cluster or datacenter or vCenter.
    * The only requirement is the shared storage. VCP needs shared storage on all Node VMs.

* Upgrade to etcd client 3.3.17 to fix bug where etcd client does not parse IPv6 addresses correctly when members are joining, and to fix bug where failover on multi-member etcd cluster fails certificate check on DNS mismatch ([#83801](https://github.com/kubernetes/kubernetes/pull/83801), [@jpbetz](https://github.com/jpbetz))

- Fixed a 1.28.0 regression where kube-controller-manager can crash when StatefulSet with Parallel policy and PVC labels is scaled up. ([#121184](https://github.com/kubernetes/kubernetes/pull/121184), [@aleksandra-malinowska](https://github.com/aleksandra-malinowska)) [SIG Apps]

* Fixes issue where masquerade rules are flushed in GCE k8s clusters. ([#56728](https://github.com/kubernetes/kubernetes/pull/56728), [@dnardo](https://github.com/dnardo))