UNCONFIRMED95402
Fullscreen API not working inside a frameset 
https://bugs.webkit.org/show_bug.cgi?id=95402
Summary Fullscreen API not working inside a frameset
domiwitt
Reported 2012-08-29 16:51:16 PDT
I am trying to use the javascript fullscreen api inside a page that is hosted within a frameset (not IFrame). While Iframe works once @allowfullscreen and @webkitallowfullscreen are set, this is not true for a frame inside a frameset.
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Frédéric Wang Nélar
Comment 1 2026-10-12 23:52:33 PDT
This is actually working if you set Permissions-Policy: fullscreen=* in the HTTP header: https://people.igalia.com/fwang/webkit-bug-95402/frameset.html But I'm not sure that should be the case. At least Chrome and Firefox don't allow that. See also https://github.com/whatwg/fullscreen/issues/112
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