This product is no longer in stock with those.... - appears in second then dissapears

[gordon99]

I hava an issue. When there are quantity 0 for certain attributes it dosen't show text: "This product is no longer in stock with those attributes but is available with others"

 

 

Actually it can be seen for a blink of an eye, but then it dissapears. If there is a product in stock it shows 1 in stock. What could be the problem?

 

Below is the link where you can see the issue. If you choose size S, one is in stock and you can see text " 1 toode on laos" . But if you choose other sizes you can see the text only a moment:

 

Link:

http://www.jooksuriided.ee/rattariided/25-pursuit-luhikesed-liibuvad-rattapuksid.html