When I add a sub-status to any of the base statuses, changing the status to this substatus now requires me to click twice in the ticket status field.
This is quite error-prone, and requires more actions than is desirable.
I want to select one status with one click; why not display the status select drop-down in the same way that departments and sub-departments are shown, i.e. as inset sub-select options ?
Official response
Thanks for the suggestion Jeroen, the UI for updating ticket statuses has been updated to now require two separate clicks, now when you hover over the status, sub-statuses will open in a dropdown menu to the side which you can select. This will update the status and sub-status in one click, reducing complexity and the possibility of error.