Created attachment 1026885 [details]
Stack trace on server when a user tries to save editor options.
Description of problem:
When save button is clicked in editor options panel, a warning message is shown with "Could not save user options". The stack trace on the server shows a ClassCastException trying to cast from
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Sign in and open the editor for any document
2. Expand the user options panel
3. Click "Save" at the bottom of the user options panel
Message shows "Could not save user options"
User options save successfully and can be restored by clicking "Load"
Stack trace from the server is attached.
Verified at cac387508126917ba1af248332369679fc462d45