There is some bug in resto shaman talent

hello. thanks for your continous supporting good game :“WOW”
Im playing shaman in wow and my main class is resto shaman.
But there is still some bug at resto shaman talent.
The last line of resto sham talent, there is 3 skill, high tide,well spring, acendance.
I was using “high tide”, when AZEROTH version, every 20,000 mana it brings “hight tide” and raised my chain heal amount 20%.
but at shadow lands, my whole mana shrinks to half of azeroth,i mean about 50,000, it still require spending 20,000mana for bringing high tide. this is ridiculous.
please fix this bug and thank you if you raise chain heal amount 20% again , not 10%.

Yeah that talent is terrible. Don’t use it. Like I really wanna emphasize, you’re trolling if you use that talent under any circumstance. Ascendance for PvP/M+, Wellspring for raid.

It was quite strong but they nerfed the heck out of it after BFA (one intended nerf and one oversight in regards to mana). It’s really a shame, honestly, because it sucks playing Restoration Shaman and having basically no reason to cast Chain Heal in Raid content. I really enjoy Wellspring but raid healing without Chain Heal is super weird.
Was it really too strong? I don’t see the issue with having a strong Chain Heal, especially one that relies on a proc, when it requires such specific positioning and requires the Shaman to be very situationally aware to not waste it. Wellspring forgives ignoring positioning and lets you heal without knowing where your heal target is standing or what is near them, making it a lot lower skill ceiling than Chain Heal.