Otherwise a tangling bmotion event will consider the selection still valid and selnormalize segfaults because of an invalid sel.ob.y index.
@@ -1069,6 +1069,7 @@ void
selclear(XEvent *e) {
if(sel.ob.x == -1)
return;
+ sel.mode = SEL_IDLE;
sel.ob.x = -1;
tsetdirt(sel.nb.y, sel.ne.y);
}