@FormParam does not work with PUT method when a Query param is present

I have the following method in my code

 
@PUT
@Path("/api/{pathparam:\\d+}")
@Consumes("application/x-www-form-urlencoded")
@Produces({"application/xml", "application/json"})
public void updateGuestPostStatus(	@PathParam("pathparam") Long pathparam, 
					@FormParam("formParam") String formParam)

When calling PUT /api/100000588600
With content type application/x-www-form-urlencoded
And content

formParam=PRESENT

It works well, I have the variable formParam set..

But when I call PUT /api/100000588600?something
with the same content

The variable formParam is null.

This did not use to happen with Resteasy 2.0.1.GA.

Actually, this is this code change which broke the behavior:
https://github.com/resteasy/Resteasy/commit/bc78212fa2744df72d82b0a025bc1b7dcb97aeb7

Since the request's parameterMap is not empty, it does not load the form parameters.

Is there a right reason to not allow FormParm on PUT method call on an URL with query parameters ?

Thank you.