[webvtt] [IR] region ids test failing (#466)

gkatsev has just created a new issue for https://github.com/w3c/webvtt:

== [IR] region ids test failing ==
[Region ids test](https://github.com/web-platform-tests/wpt/blob/master/webvtt/parsing/file-parsing/tests/regions-id.html) is passing in firefox but failing in Safari. This is due to Safari's non-standard implementation of regions. Can pass if the standard API is shimmed.

Please view or discuss this issue at https://github.com/w3c/webvtt/issues/466 using your GitHub account

Received on Wednesday, 3 July 2019 18:45:07 UTC