I'm sure it has been discussed before, but I figured I would ask a larger audience since shouting doesn't seem to provide any input.
After discussing it with several BLMS and and Healers along with being a healer myself, consensus is that there are times when Swiftcast will activate, deactivate, but not actually cast your spell. I know that for raising this issue can sometimes be attributed to the targeting mechanics, but there or other times where it simply doesn't go off. My girlfriend has also had this issue with Benediction. She would hit it and the effect simply would not happen, even beyond the 1-2 second BS delay on important, clutch, life-saving abilities (Hallowed Ground as well) and go on CD.
I bring this up though because i just logged on a bit ago and started fiddling around with a lowbie ARC. I slapped Blood For Blood and Internal Release onto my CC abilities and put them together with Raging Strikes on a macro like I have with my other classes. Well I went to pop my CDs and hit the button and noticed that Raging Strikes and BLood for Blood both went on CD but i only got the effect of Blood for Blood. The same thing happened when I had B4B and IR available, only B4B activated while both went on CD.
Is this a recent thing, since there was a patch a day or two ago, or is this a usual occurrence for ARC? I've never had this issue before with any other Job or Buff macro. Hell, I've used the same buff macro for PUG and LNC without issue.