Non-ascii keywords doesn't work in Darkslide

Keywords problem : it looks like if a keyword contains the letters å,ä,ö then no photos are listed when I tap on them. For example: if I in Darkslide tap on the tag "åsa" then no photos are listed. If I try the same in Flickrs app then the correct photos are listed.

(also, but I guess this is a Flickr issue, a word that starts with 'å' is listed under 'a' instead of under 'å')