[wp-trac] [WordPress Trac] #54210: Admin collapse button inactive due to a media query incorrectly targeting a breakpoint

[WordPress Trac]

#54210: Admin collapse button inactive due to a media query incorrectly targeting a
breakpoint
-------------------------+-------------------------------------------------
 Reporter:  Webaxones    |       Owner:  (none)
     Type:  defect       |      Status:  new
  (bug)                  |
 Priority:  normal       |   Milestone:  5.9
Component:               |     Version:  5.8.1
  Administration         |
 Severity:  normal       |  Resolution:
 Keywords:  has-patch    |     Focuses:  ui, accessibility, javascript,
  needs-testing          |  administration
-------------------------+-------------------------------------------------

Comment (by abesell132):

 This issue seems to be more widespread than just the admin menu. A similar
 bug can be replicated on the front end. Drop this code into any page or
 post to replicate:


 {{{
 <div id="change">This starts blue and turns red below 1400px</div>
 <style>
     #change {color: blue;}

     @media only screen and (max-width:1400px) { #change { color: red;} }
 </style>
 }}}

 From a screen width of 1384px to 1920px the color is blue. The 1400px max-
 width media query doesn't kick in until 1383px. (The text turns red 17
 pixels late)

 **Test Environment**
 WP Version: 5.8.1
 PHP Version: 7.3
 Browser: All of em'
 Theme: Twenty Twenty One
 Web Server: Apache
 Logs: Nothing

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Ticket URL: <https://core.trac.wordpress.org/ticket/54210#comment:10>
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