[Webkit-unassigned] [Bug 222091] [GTK] API test /WebKit2Gtk/TestWebKitPolicyClient:/webkit/WebKitPolicyClient/autoplay-policy is flaky timing out on EWS

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=222091

--- Comment #1 from Lauro Moura <lmoura at igalia.com> ---
Not sure if related to the flakiness on the bots, but I'm getting consistent failures locally in this test too in the first ALLOW_WITHOUT_SOUND check (where no playback is expected).

Digging, there are some mediaPlayerVolumeChanged calls with 0 volume on the player, which zeroes the HTMLMediaElement volume, which in turn is making the audio check in MediaElementSession::playbackPermitted to allow playback regardless of the AllowWithoutSound policy.

Forcing the volume to 1 in the test (autoplay-check.html) makes the test pass.

What could be making the player emit those volumeChanged=0 calls?

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