Is a WikiTree changing the format for entering dates?

Question

For some reason, Wikitree doesn’t like dates when I enter them for some profiles, not even old ones, when I use something like 15 Feb 2014. I got an error message saying that the date is unreadable, so then I do the YYYY-MM-DD, then finish it, and it comes back to the format that I used before! Is this a glitch?

Comments

That is the format I use with no problem, but sometimes I have an extra space, or no space, or some other typo and  get the error message.