A process that contains one or more GEL scripts or system actions that change one or more attribute values completes successfully but the expected changes are not made. This is an intermittent issue.
This issue can happen when a user is already on a page where changes will be made by a process before the process starts and then clicks save or submit after the process completes. PPM will then overwrite the changes made by the process.
This is a known limitation with PPM. Users should be trained to use the submit button instead of the save button or refresh the page after making changes if a process will be launched to prevent this from happening..