Macro acting weird with Empower spells

[Drakenfruit-defias-brotherhood]

#showtooltip
/cast [nomod, help] Dream Breath
/cast [nomod, harm] Fire Breath
/cast [mod] Spiritbloom
/cast Fire Breath

I suppose folks who’d be looking at helping folks with macros don’t need this explained so much, but just to 100% the explanation…^^’
What it’s supposed to do:

• Cast Dream Breath if no modifier key is being pressed and the target is friendly.
• Cast Fire Breath if no modifier key is being pressed and the target is an enemy.
• Cast Spiritbloom if a modifier is pressed
• Cast Fire Breath if none of the other conditions apply. Which should be when no target is selected.

Here’s the weird bit.
When I cast Dream Breath or Spiritbloom with this macro, it automatically starts to Fire Breath right after. I don’t have to press the button.
So it’s chaining the spells after eachother, for as far as I can tell, no reason.

Now, it’s not a problem really. But I’ve been using these sorts of macros for years on shamans, priests, druids, paladins. Never ran into this sort of behaviour.
What is happening here?
Are the Empower spells just so out of the ordinary?

[Elvenbane-kazzak]

Should only have a single /cast if you’re only trying to do 1 thing.

#showtooltip
/cast [mod] Spiritbloom; [help] Dream Breath; Fire Breath

Empowered spells have 500ms GCD so the macro could be automatically spell queuing the 2nd one.