Steps to reproduce the issue:
- Login to the Admin Console;
- Go to the list of users and edit one user;
- Go to a wizard step where you see a "AjaxPalettePanel" component (which is a panel that contains 2 big "<select>" fields, the one of the left shows a list of "Avalaible" items, the one on the right a list of "Selected" items);
- Edit that list (e.g. the "Groups" step, add or remove one group);
- Click the "Prev" button to go to the previous step of the wizard;
- Submit the wizard by pressing "Finish".
- Edit the same user again, you won't see the just made changes.