Resolved Knowledge quest and black spirit reward quest does not complete immediately.

Bug Name:

Knowledge quest and black spirit reward quest does not complete immediately.​

Bug Description:

Already known knowledge quest should complete immediately, which doesn't.
Black spirit reward quest after each boss fight should complete immediately, which doesn't.

Workaround: Reenter the world every time similar quest is received.​

How to reproduce/proof:

Accept any knowledge quest which you already have knowledge.
Accept any black spirit reward quest after a boss fight.​