Add a KNOWN ISSUES sections

noice.1

@@ -95,6 +95,9 @@ struct assoc assocs[] = {
         { ".*", "less" },
 };
 .Ed
+.Sh KNOWN ISSUES
+In urxvt you might have to start your terminal with
+backspacekey set to DEC.
 .Pp
 .Sh AUTHORS
 .Nm