Genesyscloud_webrtc_phone_config drift on apply with provider v1.52

So I’m seeing a very odd bug with the webrtc phone config resource in terraform. we are automating softphone provisioning for agents via github actions. every time we run plan/apply it shows a drift on the settings block even though the api returns identical json. the provider keeps trying to update the always_on and ringtone_url fields.

here is the resource:

terraform {
 required_providers {
 genesyscloud = {
 source = "mygenesys/genesyscloud"
 version = "1.52.0"
 }
 }
}

resource "genesyscloud_webrtc_phone_config" "agent_softphone" {
 name = "standard_agent_webrtc"
 description = "default webrtc config"
 
 settings {
 always_on = true
 ringtone_url = "https://example.com/ring.wav"
 mute_on_answer = false
 }
}

the error output from terraform plan:

Terraform will perform the following actions:

 # genesyscloud_webrtc_phone_config.agent_softphone will be updated in-place
 ~ resource "genesyscloud_webrtc_phone_config" "agent_softphone" {
 id = "abc-123-def"
 ~ settings {
 ~ always_on = true -> true
 ~ ringtone_url = "https://example.com/ring.wav" -> "https://example.com/ring.wav"
 }
 }

no actual change is being made but the plan never converges. if i run apply it says “1 changed, added 0, destroyed 0” but then the next plan shows the same diff.

i checked the api response directly via postman using the same bearer token. the response body matches the terraform state exactly. is this a known issue with the custom type handling in the webrtc resource? or is there a hidden field causing the hash mismatch?

running this in ap-southeast-2 region. any ideas on how to ignore this specific drift or fix the provider logic? currently blocking our nightly deployment pipeline.