FULL PRODUCT VERSION :
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Windows 7 Pro, 64 bit

A DESCRIPTION OF THE PROBLEM :
When using javaws update 91, the application working directory is now an equivalent of {java.home}, rather than the current (command invocation) directory.

As a result, an application invoked as:
$ cd C:\Users\mbrunecky
$ javaws -open Foo.properties <jnlp_url>

trying to open "Foo.properties" attempts to open {java.home}/Foo.properties
instead of "C:\Users\mbrunecky\Foo.properties".
(and obviously fails).
In addition, any files created by such application are created in {java.home}
rather than the current working directory (unless file specification includes an explicit path).

This is another, but more serious consequence than the (related) bug JDK-8154899 (fixed?). The problem is not only an incorrect reporting of the system property "user.home", the problem is that application invocation working directory is WRONG!
(I want to make sure bug 8154899  is 'fixed RIGHT")





REGRESSION.  Last worked in version 8u77

ADDITIONAL REGRESSION INFORMATION: 
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Within JNLP application, assuming arguments -open Foo.properties, add line

System.err.println("Arg " + args[0] " + new File(args[1]).getAbsolutePath());

Once invoked using:
javaws -open Foo.properties <jnlp_url>

you will see that instead of resolving Foo.properties to the current working directory, the "Foo.properties" will resolve to {java.home}/Foo.properties


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
javaws -open Foo.properties <jnlp_url>
resolving to
{command working directory}/Foo.properties
ACTUAL -
javaws -open Foo.properties <jnlp_url>
{java.home}/Foo.properties
(file not found)

ERROR MESSAGES/STACK TRACES THAT OCCUR :
None, -open option has become useless

REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
Revert to java 1.8.0_77