Wikimedia Bugzilla is closed!

Original bug title:
VisualEditor: Inserting Media fails when caret is not positioned after initialization

And this is how to reproduce the issue:
* Go to https://www.mediawiki.org/wiki/Sandbox?veaction=edit
* Confirm the "This is our new tool ...."
* Reload the page
* Press "Insert"
* Press "Media" (dialog opens)
* Click one of the images.

Result:
Mozilla Firefox:
* POST https://www.mediawiki.org/w/api.php [HTTP/1.1 200 OK 281ms]
** http://pastebin.de/124264
* TypeError: splice is undefined load.php:153
** http://pastebin.de/124263
* Nothing happens except that the dialog is closed.
* Pressing "Insert" -> "Media" now does not open any dialog

Opera Next:
* Uncaught TypeError: Cannot read property 'apply' of undefined VM140:146
* Nothing happens except that the dialog is closed.
* Pressing "Insert" -> "Media" now does not open any dialog
* Stacktrace: http://pastebin.de/124262

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Expected:
* Image inserted
* Being able to add further images to the page

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Unrelated question:
* Why are you using FormData for this specific request?



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