[xwiki-users] Special character '#' in title

Hi, We have a problem with titles with the 4.1.3 release (not sure if it's release specific however, I just spend lot of time in logs because of the migration) : When title contains the character '#' at the end, the title disappears from the page (only the page name is printed). There is error traces when viewing the document and from Lucene : 2012/07/19 14:35:34 [http://localhost:8080/xem/wiki/supporttechnique/get/XWiki/SuggestLucene Service?outputSyntax=plain&query=__INPUT__*&nb=3&input=8192] WARN o.x.d.i.DocumentTitleDisplayer - Failed to interpret title of document [supporttechnique:Archives.ExempleCodeC]. 2012/07/20 10:06:22 [http://localhost:8080/xem/wiki/supporttechnique/get/Archives/ExempleCod eC?xpage=xpart&vm=commentsinline.vm] WARN o.x.d.i.DocumentTitleDisplayer - Failed to interpret title of document [supporttechnique:Archives.ExempleCodeC]. Is it a known bug ? Thank you Nicolas