david and i talked about this "bug" over email -- it's not really a bug but a design of FARR to let farr work with multiple results in an alias. so when you type a partial alias and hit enter, it completes the alias, shows you results, and lets you choose to launch from those results.
but what seems clear is that if an alias only has 1 result, farr needs to be smarter about launching it and showing it's details, so that this extra step isn't needed. sometimes the power features of farr make it take longer to realize that sometimes the simplest things take more steps than they need to.
i'll try to get this added for the next release this week.