If you resize the window, does outputted text scroll (like OSX's terminal) or does it stay where it was (like xterm)? This is a feature I've been after for a while on Linux but have been unable to find a terminal that supports it.
I just built and tested it on Mountain Lion. The text stays put and leaves the newly created space empty, just like xterm. I think the point st is that it is small enough to be hackable , so it might not be too difficult to add the feature.
On a separate note; I'm not sure why, but xterm actually launches faster than st, although both are so fast it doesn't matter.
Not from my experience. Last tried in Ubuntu 10.10 and it didn't, unsure of the exact version. Will double-check though as I may be wrong. I use the XFCE terminal (also VTE based I believe) and that doesn't do it.