When changing interface language from the ULS Language Panel, the live preview removes the labels from all the widgets.
Steps to reproduce:
- Go to a wiki running ULS e.g. http://mlebtesting.wmflabs.org/master/core/index.php/Main_Page
- Log in (or create a login)
- Go to ULS Language Panel (cog icon on Interlanguage wikis)
- Go to the display language selection section : Display Settings -> Language
- Select a different language
- Observe the panel
The live preview will display the panel and its labels in the selected language.
The preview is shown without the correct label text. Eg: http://i.imgur.com/UNsxYdm.png
The user may have to change the language more than once to see the incorrect behaviour