[wp-trac] [WordPress Trac] #57688: File Block: Missing backward compatible styles for classic themes

[WordPress Trac]

#57688: File Block: Missing backward compatible styles for classic themes
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 Reporter:  wildworks     |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Gutenberg issue: https://github.com/WordPress/gutenberg/pull/47686

 The button element styles were moved from each block to theme.json
 (https://github.com/WordPress/gutenberg/pull/41822). And the style for
 representing the download button in the file block has also been removed
 from the block's stylesheet. Since there are no backward-compatible styles
 for the file block, classic themes without theme.json will apply unnatural
 styles.

 Editor-side styles were fixed by Gutenberg's PR:
 https://github.com/WordPress/gutenberg/issues/45399

 However, if we want to apply this style to the front-end side, we need to
 update the file (`src/wp-includes/css/classic-themes.css`) included in the
 WordPress core.

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Ticket URL: <https://core.trac.wordpress.org/ticket/57688>
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