Hello, Not sure if there is a better place to contact someone regarding scrotwm; but I'll give it a shot here.
Running scrotwm, built from cvs (scrotwm.c,v 1.302 2010/09/16). Using a default modkey, which happens to be left alt. When I start scrotwm, and have my numlock on, modkey doesn't work. It works fine with numlock off. Yet, if I restart scrotwm using a sighup signal, modkey starts to work with both numlock on and off. There is no difference in xev(1) output from modkey+j with both numlock on and off. Is that a feature/bug/sideeffect?
