Petr Kadlec wrote:
introducing magic word {{USERLANG}}; This should fix a lot of problems for multilingual wikis.
I think it's problematic due to caching.
a.k.a. RESOLVED WONTFIX http://bugzilla.wikimedia.org/show_bug.cgi?id=2085
Brion's point about template link table corruption is a good one. That would indeed cause problems.
-- Tim Starling