Action reload cannot take effect when I patch existing machine config

always

Update machineconfigurations/cluster with file action reboot

spec:
  logLevel: Normal
  managementState: Managed
  nodeDisruptionPolicy:
    files:
    - actions:
      - type: Reboot
      path: /etc/test-reboot
  operatorLogLevel: Normal
status:
  nodeDisruptionPolicyStatus:
    clusterPolicies:
      files:
      ...
      - actions:
        - type: Reboot
        path: /etc/test-reboot
      sshkey:
        actions:
        - type: None
  readyReplicas: 0

then create new machine config to generate file /etc/test-reboot, node will be rebooted as expected

apiVersion: machineconfiguration.openshift.io/v1
kind: MachineConfig
metadata:
  labels:
    machineconfiguration.openshift.io/role: worker
  name: test-file
spec:
  config:
    ignition:
      version: 3.4.0
    storage:
      files:
      - contents:
          source: data:text/plain;charset=utf;base64,aGVsbG8K
        mode: 420
        path: /etc/test-reboot

Update machineconfigurations/cluster with file action reload

spec:
  logLevel: Normal
  managementState: Managed
  nodeDisruptionPolicy:
    files:
    - actions:
      - reload:
          serviceName: crio.service
        type: Reload
      path: /etc/test-reload
  operatorLogLevel: Normal
status:
  nodeDisruptionPolicyStatus:
    clusterPolicies:
      files:
      ...
      - actions:
        - reload:
            serviceName: crio.service
          type: Reload
        path: /etc/test-reload
      sshkey:
        actions:
        - type: None
  readyReplicas: 0

Patch existing MC/test-file to generate file /etc/reload

$ oc get mc/test-file -o yaml
apiVersion: machineconfiguration.openshift.io/v1
kind: MachineConfig
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: |
      {"apiVersion":"machineconfiguration.openshift.io/v1","kind":"MachineConfig","metadata":{"annotations":{},"labels":{"machineconfiguration.openshift.io/role":"worker"},"name":"test-file"},"spec":{"config":{"ignition":{"version":"3.4.0"},"storage":{"files":[{"contents":{"source":"data:text/plain;charset=utf;base64,aGVsbG8K"},"mode":420,"path":"/etc/test-reload"}]}}}}
  creationTimestamp: "2024-04-24T06:51:10Z"
  generation: 2
  labels:
    machineconfiguration.openshift.io/role: worker
  name: test-file
  resourceVersion: "184083"
  uid: 19b6973d-76d4-488b-a17f-b160a8bb96ca
spec:
  config:
    ignition:
      version: 3.4.0
    storage:
      files:
      - contents:
          source: data:text/plain;charset=utf;base64,aGVsbG8K
        mode: 420
        path: /etc/test-reload

Node is still rebooted, reload action cannot take effect

Node is still rebooted, reload action cannot take effect

Node won't be rebooted, crio service should be reloaded as expected