Last modified: 2011-11-19 17:28:01 UTC
The form on Special:Search misses the “profile” hidden field in cases when it ought to have one. If you open http://en.wikipedia.org/wiki/Special:Search?profile=help and try to search something, you will fall back to “Advanced”, which is probably not the behavior one wants.
profile were added in 1.18. Still it is a regression compared to 1.17.
duplicate of bug 32228 which has a patch. *** This bug has been marked as a duplicate of bug 32228 ***