Celestial Software

Which SSH server are you running (and what version)? This info should be available on the Options->SSH Info dialog.

Unfortunately I cannot copy and paste from that dropdown (why not?), so I have to put it in by hand, which is prone to error. Is this what you are looking for?

My ID: SSH-2.0-1.81 sshlib: Absolute Telnet
Server ID: SSH-1.99-Open SSH_4.4 NetBSD_Secure_Shell-20061114
Key Exchange: diffie-hellman-group14-sha1
(There is more, but since I cannot copy and paste, it is tedious to try to type in by hand.)

That's enough. When a shell is started, Absolute passes the initial dimensions of the screen to the server. After that, each time the dimensions change, the new dimensions are sent to the server and (if the host app supports it), the screen can be redrawn with the new size. It seems in your case that the proper initial dimensions are not being sent to the server. I'm curious if it is a bug on the server side. I have never seen this before. Unfortunately, I don't have an OpenSSH version 4.4 compiled or I'd give it a try myself.

Still thinking........

This is an ISP out of New York City which seems to have many, many subscribers. When I do a 'who' I get a lot of responses on just one of their five shell hosts. Until recently I had to use dialup, and they have dialup PoPs thoughout much of the USA, so they are not a trivial mom and pop in the garage operation. The login give me "NetBSD 4.0 (PANIX-12) #0: Thu Jul 10 19:38:33 EDT 2008" for a shell login. Recently I moved to a DSL broadband connection from a major TELCOM service provider, and AT works just find (I am happy enough that I have been willing to pay the license fee a couple of times) except for the minor nuisance of having to resize the screen twice at login to get the maximum use of the window. It is not a show stopper, just a minor annoyance.