Sobi2 issue with identical entries

I am using Advanced SEF on a site with Sobi2 (V. 2.9.2.3 - not the very latest, I know...), sef_ext appropriately installed, Sobi2 not excluded in Advanced SEF.

Here is the problem I encountered. I looked for an entry in sobi2 with the Joomla search function (not the sobi2 search!).... and found several sobi entries which had the name (title). (In our directory this is quite common).  Now - when I click on any of these entries Joomla always defaults to and displays to the first entry in the database.

Interestingly enough this error does not occur when I use the Sobi2 search function.  Here I get the listing of all entries (in form of Vcards).  If I click any of them, I get the correct listing.

Any ideas???