sort-by-price and price filter problem

[AkvaPlus]

Hi there, I hope you can help me with this one.

I have two shops, a b2c and a b2b one. On b2b, only users that signed in can see prices and use cart. Visitors cannot see these, but still can browse the shop. For this reason, the sort-by-price function in product categories cannot be used by visitors, obviously. (it shows 0 items, when you use it)

The problem on b2c is, until you're not signed in, sorting by price don't work there either, despite prices are being shown for visitors there.

On the b2b site, I created a separate customer group that cannot see prices, and that group is set as visitors there (on b2c, groups are set as default). If you're signed in on b2c, the problem is gone, as it is on the b2b site too.

So for some reason, both sites handle visitors the same way, though they're two different customer groups. This situation infleunces the price filtering on faceted search the same way.

Thank you in advance.