I have ran into this a few times. I can only get this to work if use the range/list options. I believe this is because the type in is independently formatted fixed based on someone's region. The US does it different from Europe etc. If you allow allow a range and put it on a Slider it will work. I cannot tell you know exactly why or if it will be fixed but I can give you that workaround. For whatever reason it must be on a slider and I really believe this is intended so that the type in works based on the end-users region.