We think the issue is environmental. Please make sure you are running the latest point release of the GroupWise 7 client.
Lets see your results on testing to another workstation. You may consider to install another solution (http://www.novell.com/coolsolutions/feature/9485.html) to see whether the same behaviour occur on both solutions.
If the problem persists, please send the Formativ Configuration to support. You can obtain the configuration by selecting Help | About Formativ… from the GroupWise main menu. When the About Formativ dialog appears, go to the Configuration tab and click the button Copy to clipboard. Then paste the text into your reply email (or save it to a plain-text file and include it as an attachment).