[wp-trac] [WordPress Trac] #62868: strong/bold does not work on p block of a 2025 theme (Win Firefox only)

[WordPress Trac]

#62868: strong/bold does not work on p block of a  2025 theme (Win Firefox only)
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 Reporter:  rjnagle        |      Owner:  (none)
     Type:  defect (bug)   |     Status:  new
 Priority:  normal         |  Milestone:  Awaiting Review
Component:  Bundled Theme  |    Version:  6.7.1
 Severity:  normal         |   Keywords:
  Focuses:                 |
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 This bug was identified in a support request here.
 https://wordpress.org/support/topic/strong-bold-does-not-work-on-2025
 -theme-win-firefox-only/

 When I use Rich Text Editor (RTE) to bold a passage inside a P block while
 using the 2025 theme, the bold text will NEVER render as bold on  Firefox
 134.0.2 on Windows 11.

 Bold renders fine on other Win browsers (Edge, Chrome, DudkDuckGo). Also,
 on Android, bold renders fine on Android Firefox, Chrome, etc..

 I first discovered it when making a personal site. But I have been able to
 reproduce the bug on many different pages on the same site. Then today I
 did a fresh install on wordpress.com  with 6.71 using a 2025 theme. I made
 absolutely no customizations to this theme or even the wordpress install.

 https://robertistest.wordpress.com/

 Two things to note:

 1. If I change the p block to h1 and h3 and use RTE to bold certain words,
 Win Firefox will render the bolds correctly. This only happens on the p
 block on Win Firefox.

 2. I created  a simple static HTML page with the strong tag inside a P tag
 on a Win Firefox browser. It rendered bold successfully.  it's just not
 doing so on WordPress/2025.

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Ticket URL: <https://core.trac.wordpress.org/ticket/62868>
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