getting error "[node_check_object fail! for ring-rx 0]" when trying to modify interface configuration

[rasanentimo]

Description

I'm trying to modify interface configuration with fortios provider but getting following error

│ Error: Error updating SystemInterface resource: Internal Server Error - Internal error when processing the request (500)
│ Cli response: 
│ [node_check_object fail! for ring-rx 0]

Terraform and fortios provider version:

# terraform version
Terraform v1.9.6
on linux_amd64
+ provider registry.terraform.io/fortinetdev/fortios v1.21.0

fw1 # get system status 
Version: FortiGate-VM64-KVM v7.6.0,build3401,240724 (GA.F)
First GA patch build date: 240724

Expected result

Interface configuration changed.

Steps To Reproduce

Configure interface

resource "fortios_system_interface" "oob" {
  ip           = "10.0.3.13 255.255.255.248"
  name         = "port4"
  type         = "physical"
  vdom         = "root"
  mode         = "static"
  description  = "OOB port1"
}

Interface configuration is accepted.

Modify, for example, interface description

resource "fortios_system_interface" "oob" {
  ip           = "10.0.3.13 255.255.255.248"
  name         = "port4"
  type         = "physical"
  vdom         = "root"
  mode         = "static"
  description  = "OOB port2"
}

# terraform apply
fortios_system_interface.wan: Refreshing state... [id=port3]
fortios_system_interface.oob: Refreshing state... [id=port4]

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  ~ update in-place

Terraform will perform the following actions:

  # fortios_system_interface.oob will be updated in-place
  ~ resource "fortios_system_interface" "oob" {
      ~ description                                = "OOB port1" -> "OOB port2"
        id                                         = "port4"
        name                                       = "port4"
        # (221 unchanged attributes hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: yes

fortios_system_interface.oob: Modifying... [id=port4]
╷
│ Error: Error updating SystemInterface resource: Internal Server Error - Internal error when processing the request (500)
│ Cli response: 
│ [node_check_object fail! for ring-rx 0]

However, if I run 'terraform destroy' and then again 'terraform apply', the changes are applied. Although 'terraform destroy' doesn't remove any of the applied configurations from the FW configuration