Vacation, can set but cant unset

[chrismaster]

With latest twake mail 0.13.4 web and jmap server I can set vacation messages and they work.

But I can't unset them and I can't see enabled vacation messages.
Same behavior on android app.

And when I press Save changes in the Vacation dialog, the Dialog should close like the Dialog in the profiles settings, but it stays open. Even though, the vacation settings get applied.