Description of problem:
You can choose to view instances of a process by going to the definition details tab and clicking Options -> View Process Instances. This redirects to the Process Instances perspective. All instances are visible instead of just those belonging to the chosen process.

The search box contains the name of the process. Even if the user clicked the search button then, correct list might not be shown:
If you have a process named 'process1' and another 'process1x', doing it this way results in instances of both being shown for a 'process1' query.

Version-Release number of selected component (if applicable):
BPMS 6.0 ER2

How reproducible:

Steps to Reproduce:
1. Start an instance of process A and B (some that won't terminate immediately).
2. Go to Definition Details of process B.
3. Click Options -> View Process Instances.

Actual results:
Both instances are visible.

Expected results:
Only an instance of process B is visible.