(1) this is a debugging issue, which is utterly pointless to discuss on a web forum. We use realtime chat (IRC) for that, as described on the support page
(2) this is a known issue with MIDI which will be addressed in the near future. Until it is, unless you are a developer, there isn’t a lot you can do about it
(3) the search bar only shows up if your browser window is at least 1024 pixels wide. A google site search (adding site:community.ardour.org to the search terms) is an alternative (and is actually how the search bar works)