Arrggg - have I been testing for too long?

I came across this little issue just last night when I was filling in a form. It took me three goes to get it right!

 The thing that brought me undone was that the error message text in red has a space between the time and am/pm. So that's what I did, BUT the validation on the field only accepts the time if there is NO space between the time and am/pm. Not sure who tested this one...