This is by design:
https://github.com/openhab/openhab-webui/issues/732
These state/command options are provided by the channel the item is linked to, so you can’t override them.
And I believe like @rlkoshak that’s causing the formatting issue - you can’t have both state description options and a pattern. In that case the pattern is likely be ignored.
However this might a bug in the binding which maybe could set command options and leave the state description alone. Then the pattern would be considered for the display state and you’d still have the command options (a menu sheet with Open, Tilted, Closed when you click the widget).