[Webkit-unassigned] [Bug 28633] Submitting a form with target=_blank works only once

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=28633


Tom Clift <dr.nailz at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |dr.nailz at gmail.com




--- Comment #13 from Tom Clift <dr.nailz at gmail.com>  2010-05-16 23:03:21 PST ---
 * Reproduced on Chromium 5.0.342.9 (Developer Build 43360) Ubuntu, WebKit 533.2.
 * Could NOT reproduce on a Windows Chrome build, WebKit 533.4.

This issue was significant enough for our application that we implemented a workaround.  See the first screenshot on this page:

http://www.papercut.com/products/ng/tour/report/

The icons next to each report are image submits that open the selected report in a new tab.  This bug means that the user can only click one report, after which all other links will fail to work (until the page has been refreshed).

In general this bug would seem to apply to any form that submits to a new tab/window.

Some special notes about reproducing this bug:
 * If using a keyboard shortcut to close the new tab/window (Ctrl-w, Ctrl-F4) the bug will not occur. (If using the mouse to close the tab the bug will be present).
 * After closing the new window/tab, pressing any key while the original tab is in focus will result in the bug not occurring. (If simply clicking to submit the form  again the bug will occur).

Here is a quick hacky JavaScript workaround we used globally (t=<timestamp> is appended to the form action each time it is submitted to keep the action unique):
----
/*
 * Workaround for WebKit bug preventing a form submitting twice to the same action.
 * https://bugs.webkit.org/show_bug.cgi?id=28633
 */
// $.browser.webkit on jQuery 1.4+
if ($.browser.safari) {
  /*
   * Could test $.browser.version here if we knew which versions the bug affected.
   *  - confirmed on 533.2
   *  - NOT on 533.4
   */
  this.action += (this.action.indexOf('?') == -1 ? '?' : '&');
  this.action += 't=' + new Date().getTime();
}
----

In response to <a href="#c5">Comment #5</a>: yes, plenty of real sites.

Given that I couldn't reproduce this on 533.4 my guess is that it's been fixed.

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