searchForm both error and available?

If you go to:

http://its.typicallywonderful.nl/sameninvogtland/omgeving

you can see the searchform on top of the page. After the last update, it seems like it shows the available message as well as the error message at the same time. I thought this would be a CSS problem because I do style these elements. But I can’t find anything in the CSS from EasyReservation that is supposed to hide the error. Is it a bug?

It’s a bug, but there is already an update for it.
searchForm Module 1.2.3
Regards