the drop down menus work well in Chrome and most other Windows browsers, however on tablets they display poorly and even when they do display (a bit) don't seem to work as expected.
so far I have access to Chrome on Android and Safari on iOS.
http://www.flushingsailingclub.co.uk
I did have a similar issue some year(s) ago which was fixed by upgrading the software. I'm currently using version 4.3.