Perhaps this has already been reported but I don't have time to ferret the forums for possible past threads right now.
I have encountered this in a number of places. The latest instance was this morning as I was trying to use the Gospels Parallels interactive. I type in the reference, hit enter or click on the little arrow in the reference box, nothing happens. In one instance, fiddling around between views led me to the reference I had entered but I was not even able to reproduce that on my next attempt.
I have found similar behaviour in the Concordance and Bible browser: it seems that these tools have trouble handling Bible navigation at the same time as filtering according to other criteria (in the case of the Gospels Parallels, the data from the various harmonies).
It is very frustrating and inconvenient. Instead of being able to quickly look up what I wanted, I had to switch sorting orders and find in each gospel the passage I wanted by scrolling manually to it.