BUG=Craiceann's Carapace+Lifetap Support+Efficacy Support

Lifetap Support for some reason increases the mana reservation of Aspect of the Crab while wearing "Craiceann's Carapace" armor. Increases in a monstrous amount: 300% !!! Due to this bug, this gem cannot be used for skills in armor sockets with a simultaneously enabled aura. It should not increase the mana reserve, because: 1) this stone reserves health, not mana. 2) he should not support this aura in any form, since this stone is for supporting ACTIVE skills, but not for auras. Moreover, it generates another bug: if Lifetap Support and Efficacy Support are inserted into the "Craiceann's Carapace" armor sockets with Aspect of the Crab enabled, then Efficacy Support will also start increasing the mana reservation of the Aspect of the Crab aura. If you insert Efficacy Support WITHOUT Lifetap Support, then it does not affect the Aspect of the Crab mana reservation aura in any way.
I don't know English well, I'm sorry :)

"Lifetap Support" should not reserve mana, but should reserve health. In truth, "Lifetap Support" shouldn't reserve anything at all, there is "Arrogance Support" for that.

"Lifetap Support" doesn't give "Aspect of the Crab" anything in gameplay. Nothing! Nothing...
We get 300% of the reserve of mana without any benefit.

In chest armor 6-links sockets I had gems:
Reap-->Efficacy Support-->Cruelty Support-->Lifetap Support-->Controlled Destruction Support-->Brutality Support

And as soon as I turn on "Aspect of the Crab", "Lifetap Support" eats up mana.

no bugs here.

lifetap supports ANY SKILL, and by supporting the skill adds a duration effect which efficacy is supporting.

"

Atlas_Tartarus wrote:

It should not increase the mana reserve, because: 1) this stone reserves health, not mana. 2) he should not support this aura in any form, since this stone is for supporting ACTIVE skills, but not for auras.

None of these are bugs.

Any skill granted by equipment will also be supported by applicable support gems socketed in the same piece of equipment.

For 1) Lifetap does not change mana reservation to life reservation, it changes mana costs to life costs.
For 2) Lifetap supports any skill, furthermore every skill granted through skill gems or via equipment is an active skill. Passive skills are found on the skill tree.

I got it, thank you all for the answers.

Developers should turn off the "Lifetap Support" interaction for "Aspect of the Crab". It does not give anything. It only hurts. It's not fair that equipment skills do not support "Enlighten" and "Empower", but they do support the harmful and useless "Lifetap Support".

+ for this. Whole interaction makes the item not usable in lifetap builds :(