I have heard this is a constant problem on the Dornier 328Jet on initial climb. The airplane can supposedly climb out at +5000 f/m setting off TCASs. Some FAs love the DOjet, others hate it because they are depending on their shoulder harnesses to save them (ie back to the FD door). I fly the CRJ and we only have this problem of high capture rate when asked to level off at the very low altitudes. In the last year, I have been reducing thrust slightly while climbing in speed mode to shallow the rate of climb the last 1000 feet. Several of my FOs said that I was the only person who they have seen do that. I have wondered about this myself so I enjoyed reading this post.
Cheers.
BBB