Found it (I think).
It was the dreaded ampersand problem that we've previously raised and is now down as a bug with LANDesk.
If you use an ampersand in a column heading OR selection criteria, anything from the ampersand onwards is ignored by the system and causes all sorts of display and filtering problems.
So, in the above example we had a column called 'Date & time logged' which was causeing the rightmost part of the tile and the remaining 2 columns to be hidden from view.
Regards,
Keiron.