Can't support Orb of Storms with Spell Echo, Spell Cascade and Unleash

There is nothing in the limitations of Spell Echo, Spell Cascade and Unleash that would prevent them from being used to support Orb of Storms. Yet the game doesn't let you, when you used to be able to do so. I remember using Unleash with Orb of Storms + Overabundance in order to put down both Orbs with one cast.

Further, with Stormweaver's "Multiplying Squalls" + Overabundance I have a limit of 3 Orb of Storm spells. Which means that those support gems would work great.

+1 Bump still a problem. Especially relevant given that in 0.4 Multiplying Squalls is being buffed to +2 Limit. There's no reason Orb of Storms is able to be supported by Unleash but not Spell Echo. If the echoes go over the limit they should simply replace the previous orb. This behavior is also completely inconsistent with Frost Bomb, which can be supported by both Unleash & Echo. I would love to use Zarokh's Refrain with Orb of Storms in 0.4, and right now I'm losing -50% damage from being forced to use Unleash instead. GGG pls

Edit: Contrary to the title of this post, Unleash does work with Orb of Storms while Spell Echo & Spell Cascade do not. Maybe Unleash was fixed at some point and they forgot to fix Echo & Cascade too?

+1