When adding proxy account using WebAccess, the account does not get saved in the list of recent proxies when the User ID contains a space

When adding proxy account using webaccess the account does not get saved in the list of recent proxies when the user id contains a space 

Steps to duplicate : 

1. Create a user with a space in its email address and allow proxy access for this user to an user account.
2. Login to GroupWise WebAccess with the user that has proxy access.
3. Click Proxy
4. Use the Address Book to find a account whose user id contains a space ,with proxy access.
5. Click the radio button next to that account.
6. Click Select.
7. Click Login.
8. Click Logout.
9. Click Proxy again. The account that was just connected to will not show up in the list. 
 
This happens on GroupWise WebAccess 7 Clients on either of 2 GW WebAcess servers.
Removing the space or replacing the space with a different character in the email address avoided the issue.