[wp-trac] [WordPress Trac] #56970: .is-layout-flex broken

[WordPress Trac]

#56970: .is-layout-flex broken
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 Reporter:  rsmith4321                            |       Owner:  (none)
     Type:  defect (bug)                          |      Status:  new
 Priority:  normal                                |   Milestone:  6.1.1
Component:  Editor                                |     Version:  6.1
 Severity:  normal                                |  Resolution:
 Keywords:  needs-screenshots needs-testing-info  |     Focuses:
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Comment (by rsmith4321):

 It's on the front end. It's possible it's something with my theme, but I
 believe the .is-layout-flex class is part of the standard buttons block. I
 will include a screenshot, you can see the display: flex is added to the
 block, but that is with my custom CSS. If that weren't added the buttons
 would not be centered and would not be flexbox. I've fixed the issue on my
 site, I just thought it would be something to check.

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Ticket URL: <https://core.trac.wordpress.org/ticket/56970#comment:3>
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