Media manager selects wrong image size

[gmpfree]

symptom:

full-size image is selected in place of medium size by default.

steps to reproduce:

1. upload an image of size between "medium" & "large" value.

2. check wp-settings-1 cookie is NOT set, as /wp-includes/js/swfupload/handlers.js attempts to "cache" last values for alignment & size, hiding the problem from user.

3. now in item-list the full-size image should be selected instead of the medium.

viewing the source reveal both "medium" and "large" are checked, firefox 3 opts to render latter radio-box checked.

I believe the problem originates from

/wp-admin/includes/media.php

where function image_size_input_fields set $checked first to "medium" then to "full", in above case.

[janeforshort]

Pushing due to schedule. Can evaluate in next release cycle.

[miqrogroove]

Valid bug, closing as there was a patch already made for duplicate #11021.