Movement commands bound to 't' interfere with archery
When using archery 't' is used to select a target, but if a movement command is bound to this key (by default NW movement is), it will move the targeting cursor rather than fire the shot.
I was using the jade keybindings, which use 'f' to initiate targeting (but still use 't' to confirm target, oddly). With ADOM II bindings it works fine.