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[web-animations-2] calling play() for a finite timeline should reset the start time to the current time #14146

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Merged
graouts merged 1 commit into from
Jul 16, 2026
Merged

[web-animations-2] calling play() for a finite timeline should reset the start time to the current time #14146

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6 changes: 4 additions & 2 deletions web-animations-2/Overview.bs
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Expand Up @@ -654,8 +654,10 @@ as CSS Animations [[CSS-ANIMATIONS-1]].

</dl>

1. If |has finite timeline| and |previous current time| is unresolved:
* Set the flag |auto align start time| to true.
1. If |has finite timeline| and |auto-rewind| is true:

1. Set the flag |auto align start time| to true.
1. Set the |animation|'s <a>hold time</a> to |previous current time|.

Note: If play is called for a CSS animation during style update,
the |animation|'s [=animation/start time=] cannot be reliably calculated until post layout since the start time is to align with the start or end of the animation range (depending on the [=playback rate=]).
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