I have this problem as well. Cannot specify anything in the To Network: section besides the Server: drop down, or the Port: or Protocol: fields. No matter what I select a text entry field does not appear underneath the Server: menu to specify the To/From: Domain, IP Adress, etc. I used to use this all of the time but now it is not working.
My Little Snitch version is:
Version 3.2 nightly (4034)
Serial Number: blah-blah…
Core System Version 4034
Kernel Version 4034
My Little Snitch version is:
Version 3.2 nightly (4034)
Serial Number: blah-blah…
Core System Version 4034
Kernel Version 4034