[wp-trac] [WordPress Trac] #29171: empty (and valid) span tags are removed when switching from visual to text editor and back to visual

[WordPress Trac]

#29171: empty (and valid) span tags are removed when switching from visual to text
editor and back to visual
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 Reporter:  ruud@…                  |       Owner:
     Type:  defect (bug)            |      Status:  new
 Priority:  normal                  |   Milestone:  Awaiting Review
Component:  TinyMCE                 |     Version:  trunk
 Severity:  normal                  |  Resolution:
 Keywords:  dev-feedback has-patch  |     Focuses:
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Comment (by stephdau):

 I've tested trunk (with and without 28940.patch installed), and spans are
 always stripped out when switching from text to visual and back (with or
 without class, etc).

 I've tried trunk with your patch, and it did not make a difference, empty
 spans are still being stripped: https://cloudup.com/couAlDKgtGu

 Am I missing something?

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Ticket URL: <https://core.trac.wordpress.org/ticket/29171#comment:4>
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