Blade Spirit - Devotion procs

I am currently trying to go for a full blade spirit build because of an interesting fact I read recently.

A blade spirit faq on reddit said that each BS can proc its own devotion and that they don’t share the cooldown:
“the_all_encompassing_blade_spirit_faq” (can’t post links yet)

But after testing I could’t get them to proc the Blizzard devotion more than once in 3 seconds. Is this a bug or was the multi-devotion-proc a bug and got fixed? I couldn’t find anything about that in the changelog.

It was fixed for a while.