[wp-trac] [WordPress Trac] #39490: IE Issue - iFrame on page overlaps Admin Bar - zindex ignored

[WordPress Trac]

#39490: IE Issue - iFrame on page overlaps Admin Bar - zindex ignored
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 Reporter:  garrett-eclipse  |       Owner:  (none)
     Type:  defect (bug)     |      Status:  new
 Priority:  normal           |   Milestone:  Awaiting Review
Component:  Toolbar          |     Version:  4.7
 Severity:  normal           |  Resolution:
 Keywords:                   |     Focuses:
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Comment (by sabernhardt):

 This is an IE 11 problem on the front-end, too, though it doesn't happen
 with all iframes.

 I tried three different iframes:

 1. The embedded PDF overlapped both the WordPress toolbar and the theme's
 top navigation menu (any part of Twenty Fourteen's fixed menu, dropdowns
 in Twenty Twenty-One).
 2. A YouTube video embed worked fine (either with YouTube Embed block or
 with Custom HTML block with YouTube's iframe code).
 3. A Vimeo video embed worked fine (with either Vimeo Embed block or
 Custom HTML block with Vimeo's iframe code).

 If this is going to be fixed, it should be done soon.

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Ticket URL: <https://core.trac.wordpress.org/ticket/39490#comment:3>
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