Search has to be one of the most used features, but I can only access it by double clicking the middle mouse button, which is RSI inducing.
The spacebar (which I’m used to pop up search in Blender, for example) also seemingly does nothing, but I think that was the default in GH1 too, or at least I managed to set it as such at some point in time?
(Also, search seems to have some significant delays at times… but that’s due to the alpha nature of the thing, I guess.)
EDIT: Apparently search is double clicking any button? Ugh, RSI. 
EDIT: Apparently double clicking has always been the way? So many destroyed index fingers over the years… 