[wp-trac] [WordPress Trac] #19836: Broken TinyMCE in PHP 5.3.9

[WordPress Trac]

#19836: Broken TinyMCE in PHP 5.3.9
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 Reporter:  tech163       |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:
 Severity:  normal        |   Keywords:
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 I am running a WordPress Multi-Site install. After upgrading to PHP 5.3.9
 last evening, all the TinyMCE on all the blogs broke. All the buttons
 disappeared and the HTML magically became white (see screenshot).

 After disabling all the plugins, this was still broken (continuously
 opened and closed, and tried in Chrome incognito window). However, it does
 work on a brand new install of WP on 5.3.9, so I'm not exactly sure what's
 wrong. Downgrading to 5.3.8 fixed the problem on my multisite. I think
 it's definitely possible that it's a WP bug, so any debugging I should do?

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Ticket URL: <http://core.trac.wordpress.org/ticket/19836>
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