I have 5 points in dark rituals, but casting wandering spirits doesn’t give me any extra attack speed. Casting an actual minion like summon skeleton does trigger it, so the problem seems to lie with spirits.
This affects both the actual attack speed and the character information tab.
We’ve fixed the tooltip for 0.7.7. As Llama8 mentioned, we changed Wandering Spirits to no longer be a minion skill but the tooltip was not updated. Sorry for the confusion!