LMAO, it's not a big deal.
Yeah, I totally know. It literally happened to me today at work. We're starting the beta testing of Kingdom Tales 2 tomorrow. We won't have enough machines for all the testers so we figured we'll just compile an iOS version so one or two of them can test on an iPad. Of course, because iPad's interface it a touch interface, I had to activate and check some code that we already used in Kingdom Tales. Everything worked fine. It was no surprise since the engine hasn't gone many important changes and I basically took the code from the first game and started modifying it for the second game so most touch-specific code was just commented out and I reactivated it.
When Kreso finally had the build ready today, I found a bug in the first 10 seconds. -_- When tapping on the task displays, they wouldn't show a popup with the description. It turns out that the bug is also present in KT1 so it's not a new thing. In the mobile GUI of KT1 we used a button plus a popup window with all tasks so no one seems to have noticed the bug in the tablet/desktop GUI, lol! Oh, and it worked fine when using a mouse since a different subsystem is used (hovering with the cursor over the GUI element instead of tapping it) which is why we never noticed that it doesn't work when tapping on it.
I guess I can spare an hour. xD I might check it out tomorrow.