A DESCRIPTION OF THE PROBLEM :
The documentation about Deployment Rule Set ( http://docs.oracle.com/javase/7/docs/technotes/guides/jweb/security/deployment_rules.html ) describes clearly, that an Application does not need to be signed if the rule grants the permission run.
So I have created a rule like

<rule>
     <id location="https://my.url"/>
     <action permission="run"/>
 </rule>

but my Applications don't start when they are not signed.

This effects also Java 8 ( http://docs.oracle.com/javase/8/docs/technotes/guides/deploy/deployment_rules.html )

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
In the documentation should be written, that applications need to be signed to be started also it has the permission run.

OR:

Change the implementation so that Applications can really be started without being signed.
ACTUAL -
In the documentation is actually written, that applications can start without being signed if it has the permission run.

URL OF FAULTY DOCUMENTATION :
http://docs.oracle.com/javase/7/docs/technotes/guides/jweb/security/deployment_rules.html