I recently added a simple alias for my bank's website containing a name and a result (ie no regex).
I discovered that if the name I gave it (the alias) was only one word eg "Bank" then I could type part of that name eg "ban", FARR would show the bank alias in the dropdown, and would launch the website if I selected it.
If, however, the alias name had a space in it eg "Bank Online" then when I typed "ban", FARR would again show the alias in the dropdown but if I clicked it it would just expand what I'd typed to "Bank Online" but wouldn't actually launch the website.
I tried this with a number of other aliases and there was definitely a difference between aliases with a space (or multiple words I guess) in the name and those without.
NOTE: this is not the case if you add a regex to the alias. eg in the case above I could get "Bank Online" to work correctly if I simply added the regex pattern "bank online". Given the pattern was considered 'optional' I wonder if this is an issue or I'm using FARR incorrectly...?