[wp-trac] [WordPress Trac] #48734: Twenty Twenty: [em] tag with blank string inside ruins theme layout

[WordPress Trac]

#48734: Twenty Twenty: [em] tag with blank string inside ruins theme layout
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 Reporter:  derlynad                           |       Owner:  audrasjb
     Type:  defect (bug)                       |      Status:  accepted
 Priority:  normal                             |   Milestone:  5.3.1
Component:  Bundled Theme                      |     Version:
 Severity:  normal                             |  Resolution:
 Keywords:  has-screenshots reporter-feedback  |     Focuses:
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Comment (by audrasjb):

 @derlynad yes, removing those lines don't do anything, I messed up with my
 tests, sorry.

 I can reproduce the issue on every default theme, like Twenty Nineteen for
 example. It seems to happen only when editing posts made with or for the
 Block Editor. Like default posts/pages or posts/pages created with the
 default editor. It doesn't seems to happen with new posts/pages manually
 created with the Classic Editor.

 Can you reproduce that on your side?

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Ticket URL: <https://core.trac.wordpress.org/ticket/48734#comment:7>
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