Why oh why does Zwift have a done button right underneath a start button when you want a coffee break. (In game whilst on iPad) This is the 10th time I’ve waisted a break. Yes I thought I learnt - but in the heat of exhaustion and needing a break the accidental second touch and your done is just stupid. Perhaps a move of the done button - or confirmation input “are you really done?” Help me here Zwifters!! Ride on!
If you are talking about companion app buttons and controls, it is probably worth putting here:
https://forums.zwift.com/t/companion-app-ui-cleanup-delete-buttons/579452
There are many things there that could be done better, particularly giving users ability to hide buttons they don’t use and to re-order the ones they do use.
This is a common function for toolbars and views in a lot of apps, be it desktop or web-apps (ServiceNow for instance).
Then your change could go with that, adding a confirmation.
Nope in game and I use my iPad - tethered to screen select menu then coffee cup - start and then oops done!!!
Whilst this has never happened to me, I wish Coffee Break had a slightly different function; if we get 3 minutes we can use every 30 minutes, we should be able to recover a minute for every 10 minutes; and if we end up using only a minute, we should be able to hit it again and have 2 minutes.
This… essentially would fix this problem and make the function more appropriate as well. Two birds with one stone.
There’s nothing more annoying than using coffee to refill a bottle, getting side tracked for a split second, getting back on your bike, hit the continue button, and realize you left the bottles at the sink… 
(if you haven’t done it, it’ll happen!)