Who knows if it's working as intended, but it's certainly not working as described. The tooltip clearly describes the effect as a 'Foe Beam.' Ergo, it should only affect foes, which it isn't doing at the moment.
No need to get snippy about the semantics of the title. The first line in the post body clarifies what's going on. I get the feeling you made an account just so you could correct someone's grammar.
There is no red circle for Antipathetic Field, and even if it did, ted portion of circles signify team damage for spells that deal team damage... but they are still there for foe only spells, in which case they signify nothing in particular... like Eyestrike, for example.
Targeting is foebeam but the next line doesn't state foebeam, indicating it hits everything.
And I wasn't being snitty with my post just trying to give the poster the idea that it wasn't a bug and let him know he just understood/read it wrong. And to claim I just made up an account to nitpick over grammar when you apparently did the exact same thing based on my perceived intent for the message is fairly ironic.
At least I answered his question whereas all you did by posting is try to attack me for trying to be helpful.