Mistweaver talent spirit of the crane not giving mana back

Simple Q & A
1

Ive run several simulations with spirit of the crane and under the other tab there is no listed mana gains under the other tab

2

Can you link me to your simulations?

I tried it with a generic mistweaver on a mythic +10 and I see mana gains from it:
https://www.askmrrobot.com/wow/simulator/report/706cd10548a649759f53ec9b145478ef

3

its working fine no idea what i’ve done differently