AudioParam.setValueCurveAtTime() should have an implicit call to setValueAtTime() at the end, as specified here:
An implicit call to setValueAtTime() is made at time 𝑇0+𝑇𝐷 with value 𝑉[𝑁−1] so that following automations will start from the end of the setValueCurveAtTime() event.
Created attachment 409388 [details]
Committed r267435: <https://trac.webkit.org/changeset/267435>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 409388 [details].