Shapeshifting default attacks do not get skill quality from equipped weapon

Hello,

Today I noticed that the default shapeshifting attacks -> Maul, Shred and Rend do not get any skill gem quality regardless of the amount of quality on the equipped talisman.

I am not sure if I am missing something but you cant quality them up with GcPs and it is not a problem to the Talisman I had equipped at the time. I tried with various item level Talismans and varying quality but nothing really changes. I do not know if this is intended as each skill does have an inherent stat associated with quality.

Thanks

Talismans are classified as martial weapons, so their quality boosts physical damage.

Also Maul, Shred, and Rend are not provided by talismans (the way Staves, Sceptres, and Wands provide skills). They are, as you said, default attacks.

There are a few sources that improve quality of skills globally.