A lot of people were fishing for instance, and this fix is limiting them in the ability to do so.
For everything else... you have a whole minute to click on Commence, that is enough in most situations if you actually paying attention that you are in duty finder.
It was done to prevent deliberate clicking on withdraw button for self-benefit, as it was annoying as hell. As people who naturally have short queue time (i.e. tanks and healers) just fish for party in progress as it saves them a lot of time.
Expert is usually no longer than 15 mins and High is less than 20. The only long one is low level roulette due to the number of Nin leveling up, so I would recommend to avoid it if possible.
