Can't select individual contacts on the Search Results page - replicated on Demo

Hi

We've been working with a client who has been having trouble selecting individual contacts on the search contacts result page.

This is happening when;
They use Advanced search
They select a different 'Search View' (a profile is enabled for this)
They search
On the results page if they select any contacts the 'Selected Records' counter stays at 0

Coleman updated the demo site to 4.3.4 (after a forum post) but the client checked against the demo and they are still getting the fault. This seems to be intermittent.

Oliver