Thread:Talk:Search/'.' considered a word character?

When using the following query on commons:

incategory:California_Historical_Society_Collection,_1860-1960 intitle:restoration.jpg

One result is found, but if "restoration.jpg" is truncated to "restoration" (as would normally be the case when searching for that term) no results are returned. This is highly problematic for title searches on commons, where most page titles include file extensions. Possibly related to this this bug?