Sunset trigger and sun.sun state not in sync

[sallygal1]

The problem

I'm using the sun.sun sunset trigger in my automation (among others). Additionally I have an automation condition to confirm that the state of sun.sun is below_horizon. This has been working fine so far. I suspect there is a new bug, introduced in #113544 @bdraco

Now, once the sun.sun sunset trigger fires, the sun's state sometimes is below_horizon but sometimes also above_horizon (altough the trigger just fired).

To reproduce create an automation with a sunset trigger and a condition with sun state below_horizon. You will notice, sometimes the automation condition is false.

And interestingly, some other automation in my system is working fine:

What version of Home Assistant Core has the issue?

core-2024.4.2

What was the last working version of Home Assistant Core?

core-2024.3.3

What type of installation are you running?

Home Assistant OS

Integration causing the issue

sun

Link to integration documentation on our website

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

Diagnostics information

No response

Example YAML snippet

alias: Sun trigger error
description: Sun trigger error
trigger:
  - platform: sun
    event: sunset
condition:
  - condition: state
    entity_id: sun.sun
    state: below_horizon
mode: single

Anything in the logs that might be useful for us?

No response

Additional information

No response

[home-assistant]

Hey there @Swamp-Ig, mind taking a look at this issue as it has been labeled with an integration (sun) you are listed as a code owner for? Thanks!

Code owner commands

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• @home-assistant close Closes the issue.
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• @home-assistant reopen Reopen the issue.
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• @home-assistant add-label needs-more-information Add a label (needs-more-information, problem in dependency, problem in custom component) to the issue.
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[atx32]

I am seeing the same issue, with about a 2-minute difference between the sunset/sunrise trigger and the state updating.