I just upgraded one server to latest git (version: kamailio 4.1.0-pre0 (x86_64/linux) 26fa46-dirty), sl:local-response route is no longer executed. I have in kamailio.cfg
event_route[sl:local-response] { xlog("L_INFO","Local response\n$mb\n"); }
No local responses are logged in kamailio log file. It was working fine in kamailio 4.1.0-dev7 (x86_64/linux) b2a536-dirty