[Webkit-unassigned] [Bug 53475] New: Strikethrough disappears when posting a message on odnoklassniki.ru

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=53475

           Summary: Strikethrough disappears when posting a message on
                    odnoklassniki.ru
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
               URL: http://odnoklassniki.ru
        OS/Version: All
            Status: NEW
          Severity: Major
          Priority: P2
         Component: HTML Editing
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ap at webkit.org
                CC: rniwa at webkit.org


I've been shown a bug on odnoklassniki.ru (a popular social network) that I couldn't fully reduce, and then I found surprising reports of the same about other rich text editors. The steps seem to be the same in each case:
- type some text in an input field;
- use whatever editing toolbar to set a strikethrough style on it;
- post/submit/save.

Results: there is no strikethrough in Safari or Chrome in posted text. There is no problem in other browsers. Other styles (like bold or underline) work fine.

There are people who consider this a huge issue - strikethrough is a popular effect, and losing it _after_ posting is gross.

In the case of odnoklassniki.ru, I know that the site uses GWT, which makes it hard to debug. I suspect that there is a whitelist of tags somewhere, and <s> is not one of them (Firefox uses CSS styling to implement execCommand, so it's not affected).

Other reports that I found, and which are not necessarily related at all:

TinyMCE: http://dev.plone.org/plone/ticket/11438
Wordpress: http://wordpress.org/support/topic/strikethrough-doesnt-work-with-safari-5
http://losingit.me.uk/2010/04/05/the-case-of-the-disappearing-strikethrough-tags

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