[wp-trac] [WordPress Trac] #28037: Editor merges paragraphs when post edit screen is accessed by pressing browser's back button

[WordPress Trac]

#28037: Editor merges paragraphs when post edit screen is accessed by pressing
browser's back button
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 Reporter:  dbernar1      |       Owner:  azaozz
     Type:  defect (bug)  |      Status:  reviewing
 Priority:  normal        |   Milestone:  4.0
Component:  Editor        |     Version:  trunk
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:  javascript, administration
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Comment (by azaozz):

 Replying to [comment:12 DrewAPicture]:

 Re-testing the patch, it still seems to work in all the WebKit browsers I
 have access to (latest "desktop" Chrome and Safari, iOS7.1 Chrome and
 Safari, Android KitKat). However it is a "dangerous" thing to do.

 There is no way to detect if the page is being loaded because the user
 clicked the Back or Forward button, so that code has to run on every
 TinyMCE init. The risk is that some old(er) or "obscure" versions of
 WebKit based browsers may not work properly when replacing
 `textarea.value` with `textarea.textContent`. That could make the editor
 completely unusable.

 Replying to [comment:10 avryl]:

 This is possible in theory, however passing the content through wpautop()
 twice may break it in some cases. So we will have to determine if the
 content was passed through wpautop() first. As far as I see such test may
 not be 100% accurate.

 IMHO the best change that will also fix this is to always load the
 post_content before is was filtered with wpautop(), i.e. ditch
 `wp_richedit_pre()` completely and only use `wp_htmledit_pre()`. Then add
 another `'BeforeSetContent'` in the 'wordpress' plugin that will run the
 content through the JS wpautop() before it is loaded in MCE.

 Been thinking about doing this (and testing it) few times in the past. It
 works well however may bring some back-compat issues. Can probably try it
 in 4.1?

 For now I think the safest option is to set `autocomplete="off"` on the
 whole form in all WebKit browsers. This works well but would prevent
 autocomplete for all fields, including all metaboxes added by plugins.
 There will likely be some unhappy users because of this. So the question
 is: what is more important, maintain the editor content when the user
 clicks the Back button or have autocomplete for metaboxes?

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Ticket URL: <https://core.trac.wordpress.org/ticket/28037#comment:13>
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