Changing HA server port from 8123 results in tts.cloud error with Google Cast

[Morphy99]

The problem

After changing my HA instance port away from 8123 tts.cloud seems to be broken. If I change back this works OK again.
Casting local media works as before. Just tts.cloud isn't working.

- service: tts.cloud_say
  data:
    message: any random message
    entity_id: media_player.bedroom_nest

Environment

• Home Assistant Core release with the issue: 2021.1.5
• Last working Home Assistant Core release (if known): -
• Operating environment (OS/Container/Supervised/Core): Container
• Integration causing this issue: tts /google cast
• Link to integration documentation on our website: https://www.home-assistant.io/integrations/tts/

Problem-relevant configuration.yaml

This is how I changed the HA port:

http:
  server_port: 8089

I have tried this in configuration.yaml:

  - platform: cloud
    service_name: cloud
    base_url: https://myURL.ui.nabu.casa/

Still the same error below with the local IP

Traceback/Error logs

Source: components/cast/media_player.py:348
Integration: Google Cast (documentation, issues)
First occurred: 9:31:03 (5 occurrences)
Last logged: 9:32:49

Failed to cast media http://192.168.x.x:8123/api/tts_proxy/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx_en-us_a9c18110b0_cloud.mp3 from internal_url (http://192.168.x.x:8123). Please make sure the URL is: Reachable from the cast device and either a publicly resolvable hostname or an IP address

Additional information

[probot-home-assistant]

Hey there @pvizeli, mind taking a look at this issue as its been labeled with an integration (tts) you are listed as a codeowner for? Thanks!
_{^{(message by CodeOwnersMention)}}

[Morphy99]

Never mind. I forgot all about the internal_url which is in general settings in lovelace. I've now put it in configuration.yaml just to remind my future self 😄