It's hardly a show stopper, but I'm sure that when I've used the Post QSO function in the past, it's defaulted to the current date and time.
I noticed a week or so ago that has stopped happening. The date and time seem to default to something else - possibly the last time you used the Post QSO function? Which is sort of clever if it's the case, but can trip you up when you don't notice you are logging something on the wrong day!
Easy to work around of course, but just wondered whether this was by design or not.