A few users have experienced this issue and the existing article https://kb.vmware.com/s/article/85473 addresses only one of the scenarios.
Symptoms:
The issues involving both SYN and ACK scanning are resolved in VMware ESXi 8.0 Update 2.
Workaround:
To prevent this issue from occurring ensure that network port scans are not run against the ESXi host vmk interface subnets where these services are configured.
Note:
Since the behavior is ESXi related, NSX for vSphere environments can also experience network disruption after a port scan when multiple VTEPs are configured on ESXi hosts.