The problem appears in version 220.127.116.11 and in revision 1495522. I
attached a two-line patch that fixes it. This problem and the
attached patch are similar to the previously fixed
WW-4115 and its
In method "ValidateVisitor.isExpression", the loop over "nodes" should
break immediately after "elExpression" is set to "true". All the
iterations after "elExpression" is set to "true" do not perform any
useful work, at best they just set "elExpression" again to "true".