An NSMatrix with its selection mode set to NSListModeMatrix seems to, if
there's no other selection, automatically select its first cell whenever
a resize or scroll happens. I'd be very grateful if someone could tell
me how to get it to not do that.

--
"First, let me make it very clear, poor people aren't necessarily killers. Just
because you happen to be not rich doesn't mean you're willing to kill."
-- George W. Bush in Washington, D.C. on May 19, 2003