GroupWise crash while transferring ownership of a shared folders

Customer has a problem when he shares a folder to a user and later will transfer the ownership of this folder to a user which does not exist in GroupWise, Groupwise crashes/freezes.

This has been tested in Win 7 and Win 10 environment.

Steps to duplicate:

1. right click to a private folder

2. share that folder to any user

3. confirm the share with "ok"

4. open the same folder again and click to transfer the ownership

5. enter a user which does not exist in GroupWise

6. click "send"

7. now there is the crash/freeze