Do the following:
Goto an parametrized job start page.
Fill-out all paramteters fields
Start the task
Go to the task's console
Use browser's Back button to return to the task start page.
The form seems to be filled in, but the values are mixed between fields. E.g. The previous PARAM1 value is now in the PARAM2 field.
This makes reusing the form very difficult and error-prone, as upon a first look the form seems to be filled correctly.