Decaying Hex Doesn't Have Any Damage Scaling

Decaying Hex let's curses add a Debuff that inflicts Chaos Damage over Time.
However, this currently does NOT scale with Increased Chaos Damage. There are also no supports to increase this damage, and some supports that should work, like Swift Affliction, are DISABLED when paired with Decaying Hex.

Due to this issue, Decaying Hex is extremely limited on how much damage it can do. It also cannot work on Curses linked to Blasphemy despite no text stating the curse needs to be Self Casted to work with Decaying Hex

I recorded a video that includes showing Chaos Damage not scaling the damage, and support gems not working.

https://www.youtube.com/watch?v=0d3YY7A97Bw