Void Sphere of Rending + Spell Echo

Void Sphere of Rending can't be supported by Spell Echo.

Wave of Conviction have "Only one Wave of Conviction can be active at a time" and it can be supported by Spell Echo, when used with Spell Echo, the first wave disappear after the second wave is casted.
Hydrosphere shares the same behavior of Wave of Conviction, it can be supported by Spell Echo and the first Hydrosphere will be destroyed in the second cast of Spell Echo.

Then why the hell Void Sphere of Rending can't be supported by Spell Echo?
The first Void Sphere should disappear and the second one should stay, but none of this happens because the Skill gem doesn't support Spell Echo.