"remaining" attribute on timer does not update

[DHandspikerWade]

The problem

Using the "remaining" attribute on timer entities does not update. With an initial value of 50 minutes and after running for over 10 minutes, dashboard tiles and refreshing the state display in developer tools still shows 50 minutes. Entity card shows the correct time.

What version of Home Assistant Core has the issue?

core-2024.3.0

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant Container

Integration causing the issue

timer

Link to integration documentation on our website

https://www.home-assistant.io/integrations/timer/

Diagnostics information

No response

Example YAML snippet

timer: 
  laundry_dryer:
    name: Dryer
    duration: '00:40:00'
    icon: mdi:washing-machine

Anything in the logs that might be useful for us?

No response

Additional information

Timer was started via a timer.start service call. I let the timer run for over ten minutes without change.

[home-assistant]

timer documentation
timer source

[breti]

Same as #112573

[tdejneka]

Not a bug.

The value of the remaining attribute has never updated while the timer entity is active.

[olicooper]

This sounds related to my issue...
I have an issue with ESPHome not getting subscription updates for the timer attributes despite other entities receiving an initial attribute update upon subscribing even if the entity attribute has not changed. Are you sure this isn't a bug with HA? I have raised the issue with ESPHome in case it is an ESPHome issue.

Update: Ignore my comment, I had an issue in my own code which stopped it working. 🤦