Growl has been broken for far longer than I can actually remember and it’s been getting worse. I know blizz implemented a “safety feature” that turns it off in dungeons, but when you turn it on, it doesn’t work, everything just ignores it. This makes it really difficult because Misdirect is also so busted that you’ll strip the agro right off your pet and if you reapply it, the mobs/bosses ignore that too.
It’s slowly been creeping into open world content too, random mobs will just ignore growl, even if you apply it manually.
They (thankfully?) fixed the issue of not being able to turn growl on if it was turned off, but as of yet have completely ignored everything else that has been broken since (I think) WoD or Legion.
But hey, we got a $90 auction mount, so that’s something right?