Aspect of the Spider interacts with Lifetap Support

I have Aspect of the Spider on my body armour, and Lifetap Support socketed into it.

When I want to activate Aspect of the Spider, it shows 40.5% required mana reservation. It should be 25% multiplied by my mana reservation efficiency, so less than 25%.

For some reason, the Aspect skill is "linked" to the skill gems in my body armour, or at least the lifetap, because the tooltip from the Aspect has "Lifetap last 5.1 seconds" on it.

I would assume that each Aspect should stand for itself and not be linked to anything in the item that provides it. Since I cannot stop this "linking" and it seems to be arcane knowledge that this would happen, I suggest to make Aspects unlinkable.

I'd say this is expected behaviour. Same as you get for Aspect of the Cat and Less Duration support, this combo is used very often.

Nah this is intended behavior and would be a bad change. This is also why people craft it on rings/amulets.