When using the 'String translation' for WPML the translations are only shown for a split second before being immediately hidden.
These are the steps used when I encounter the error.
1) from the admin panel click on string 'string translation' under WPML sub emnu
2) From the dropdown 'Select strings within context:' choose WP
3) For item 'Tagline' click on the translations link.
4) The row is expanded showing a text area to enter a translation, but it is immediately collapsed again. This means I cannot enter a translation for this string.
I am using WP 3.1, WPML Multilingual CMS 2.1.2, and WPML String Translation 1.1.1
http://wordpress.org/extend/plugins/sitepress-multilingual-cms/
