[TYPO3-shop] backPID in Single view

[Karsten]

Hi list

Just updated from 2.5.0 to 2.5.3 and now i have some problem with 
backPID in Single view

I can see in the url that the backPID is set correct, but when i hover 
the "Back to list link" in the Single view mode, i get the Single view 
page, result is a blank page(PIDitemDisplay).

I have read the manual, and cant seem to find any change in the new 
version, or am i missing something...?

Karsten