Cannot start application using Java Web Start 7 if href attribute in jnlp contains query string

Question

Possible duplicate:
URL parameters in jnlp href attribute

Java Web Start 7 cannot start an application if there is a query string in the href attribute in the jnlp file.
For instance:

<jnlp spec="1.0+" codebase="http://localhost:8080/" href="Test.jnlp?query_string"> ... </jnlp> 

There are no errors. Web Start simply does not start the application.

But this jnlp can be handled by Java Web Start 6 without any problems.

Is this a bug in Java Web Start 7?
Or is the query string in the href attribute incorrect for some reason?

UPDATE:
There is no such problem in jdk1.7.0_04.
But this problem exists in jdk1.7.0_07.

UPDATE:
The error was introduced in jdk1.7.0_06.