UsingWW: Message "Your union can be simplified by combining some sets" in case if a wrong answer.

WeBWorK Problems

This forum has a limit to the number of forum postings you can make in a given time period - this is currently set at 10 posting(s) in 1 day

I was not using the latest version of the develop branch. With the latest version I do not observe this error anymore. Sorry for the noise.