- Replace scale down forbidden window with scale down stabilization window. Rather than waiting a fixed period of time between scale downs HPA now scales down to the highest recommendation it during the scale down stabilization window. ([#68122](https://github.com/kubernetes/kubernetes/pull/68122), [@krzysztof-jastrzebski](https://github.com/krzysztof-jastrzebski))...

* The ability to use kubectl scale jobs is deprecated. All other scale operations remain in place, but the ability to scale jobs will be removed in a future release.  ([#60139](https://github.com/kubernetes/kubernetes/pull/60139), [@soltysh](https://github.com/soltysh))

and otherwise transfer the Contribution of such Contributor, if any, in source code and object code form. This patent license shall apply to the combination of the Contribution and the Program if, at the time the Contribution is added by the Contributor, such addition of the Contribution causes such combination to be covered by the Licensed Patents. The patent license shall not apply to any other combinations which include the Contribution. No hardware per se is licensed hereunder. c) Recipient understands...

- Multiple Kubernetes clusters can now share the same resource group
    - When upgrading from previous releases, issues will arise with public IPs if multiple clusters share the same resource group. To solve these problems, make the following changes to the cluster:

- Fixes a rare race condition handling requests that timeout ([#107460](https://github.com/kubernetes/kubernetes/pull/107460), [@liggitt](https://github.com/liggitt)) [SIG API Machinery]
- Mount-utils: Detect potential stale file handle ([#107040](https://github.com/kubernetes/kubernetes/pull/107040), [@andyzhangx](https://github.com/andyzhangx)) [SIG Storage]

### Other (Cleanup or Flake)

* Fix kubelet PVC stale metrics ([#59170](https://github.com/kubernetes/kubernetes/pull/59170), [@cofyc](https://github.com/cofyc))
* Restores the ability of older clients to delete and scale jobs with initContainers ([#59880](https://github.com/kubernetes/kubernetes/pull/59880), [@liggitt](https://github.com/liggitt))

    *   The view role includes read permissions on poddisruptionbudget.policy resources.
*   RBAC rules can now match the same subresource on any resource using the form `*/(subresource)`. For example, `*/scale` matches requests to `replicationcontroller/scale`. ([#53722](https://github.com/kubernetes/kubernetes/pull/53722),[ @deads2k](https://github.com/deads2k))

- Failed to provision volume with StorageClass "azurefile-premium": failed to create share andy-mg1121-dynamic-pvc-1a7b2813-d1b7-11e8-9e96-000d3a03e16b in account f7228f99bcde411e8ba4900: failed to create file share, err: storage: service returned error: StatusCode=400, ErrorCode=InvalidHeaderValue, ErrorMessage=The value for one of the HTTP headers is not in the correct format. ([#69718](https://...

  fix: ensure InstanceShutdownByProviderID return false for creating Azure VMs ([#104448](https://github.com/kubernetes/kubernetes/pull/104448), [@feiskyer](https://github.com/feiskyer)) [SIG Cloud Provider]
- Kube-proxy: delete stale conntrack UDP entries for loadbalancer ingress IP. ([#104152](https://github.com/kubernetes/kubernetes/pull/104152), [@aojea](https://github.com/aojea)) [SIG Network]

## Changelog since v1.18.14

## Changes by Kind

### Bug or Regression

- Fix Azure file share not deleted issue when the namespace is deleted ([#97417](https://github.com/kubernetes/kubernetes/pull/97417), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider and Storage]