189600 2018-09-13 12:01:38 -0700 Blocked autoplaying audio plays unexpectedly on visibilityState change 2018-09-13 12:27:55 -0700 1 1 1 Unclassified WebKit Media Safari Technology Preview Unspecified macOS 10.13 NEW InRadar P2 Normal --- 1 jer.noble jer.noble webkit-bug-importer oldest_to_newest 1459464 0 349687 jer.noble 2018-09-13 12:01:38 -0700 Created attachment 349687 two-audio-element-autoplay.html On Mac Safari, when two media elements in a page both have "autoplay" attributes, and one element has its play() method called during a user gesture, the play restrictions for every media element in the page is lifted. The next time the "eligible for autoplay" check is made, the previously blocked element begins playing unexpectedly. This is fallout from our compatibility decision to unblock autoplay at a page level once one element is unblocked due to a user gesture. 1459479 1 jer.noble 2018-09-13 12:27:13 -0700 This affects <http://relay.fm/live>. 1459480 2 webkit-bug-importer 2018-09-13 12:27:54 -0700 <rdar://problem/44427691> 349687 2018-09-13 12:01:38 -0700 2018-09-13 12:01:38 -0700 two-audio-element-autoplay.html two-audio-element-autoplay.html text/html 348 jer.noble PCFET0NUWVBFIGh0bWw+CjxodG1sPgo8aGVhZD4KPC9oZWFkPgo8Ym9keT4KCTxhdWRpbyBhdXRv cGxheSBzcmM9Imh0dHBzOi8vZGV2c3RyZWFtaW5nLWNkbi5hcHBsZS5jb20vdmlkZW9zL3N0cmVh bWluZy9leGFtcGxlcy9iaXBib3BfMTZ4OS9iaXBib3BfMTZ4OV92YXJpYW50Lm0zdTgiIGNvbnRy b2xzPjwvYXVkaW8+PGJyLz4KCTxhdWRpbyBhdXRvcGxheSBzcmM9Imh0dHBzOi8vZGV2c3RyZWFt aW5nLWNkbi5hcHBsZS5jb20vdmlkZW9zL3N0cmVhbWluZy9leGFtcGxlcy9iaXBib3BfMTZ4OS9i aXBib3BfMTZ4OV92YXJpYW50Lm0zdTgiIGNvbnRyb2xzPjwvYXVkaW8+PGJyLz4KPC9ib2R5Pgo8 L2h0bWw+