Is Tenacity working as intended?

[Lewtskie]

Skillspeed affects the amount of damage in DoT and recast timers of weaponskills not auto attack. Auto attack is not DoT. The speed and frequency in which your auto attack occurs is on the weapon. It's the AUTO-ATTACK and DELAY.

Skill Speed now has a minor damage increase on auto-attacks since SB's release. Read the Patch Notes.

What I wonder is why SE don't give us enough info right away like many other MMO's.

Could be they enjoy when the community of a game theorycrafts and runs calculations, or might be just that they don't like showing the tools and framework. I'd at least like to think it's more than just paranoia.