It is a longer time now, possibly two weeks or more, I think and the problem persists:
At eBay.com site, entering any seller's eBay Store You do see the items in columns, but at the left side there is no search of items via seller's selected Store categories. Though these Store categories are partly (top of the alphabet only!) visible via each indinvidual eBay item, the engine does not function and leads to the seller's eBay Store without selecting any chosen category. It is major loss for sellers, because it makes hassle to buyer's to make exact search. This problem does not appear at eBay.co.uk where everything functions well.
eBay technicians are welcome to act the repair works!
Thank You!