When adding/updating ‘Finding Details’ or ‘Comments’ for any given vulnerability within a checklist in STIG Viewer, you must leave the control, by clicking or tabbing out, in order for the information to save (the event handler raises when focus is lost from the control). While this is functioning as expected, we realize this is not necessarily intuitive to the user, and we will correct it in the next update (version 2.3) of the tool.
Additionally the hot-key for saving the checklist (Ctrl+S) is not currently present, but will be added in the next update as well. Please use the menu selection to save until the next release.
A STIG Viewer User’s Guide has been posted to http://iase.disa.mil/stigs/