It used to be that (in FF2) we couldn't edit radio buttons, check boxes and select boxes via the right click menu, but they can still be edited by selecting them and then clicking the appropriate toolbar button. Now in FF3 the controls can't even be selected.
@martinkou: Is this ticket waiting on action from Mozilla or is this something that could be fixed by the CKEditor team?
If this is something fixable by CKEditor team, could this ticket be targeted to one of the upcoming milestones? It is quite annoying to have to remove a select box and then re-add it to simply add or remove one option.
We could replace select elements with fake elements like we did for input hidden.
Basically there is only one problem for this, we really can't see how wide the real select element would be. But I'd think that editable fake element is better than creating selects from scratch every time you need to change them ( on FF ).