Elemental Weakness + Cursed Ground creates Cursed Ground, yet Ground Supports can't be linked

E.g. Elemental Weakness.

E.g. + Cursed Ground. Yellow text: "Supports Curse Skills. Supported Curse Skills create areas which Curse Enemies so long as they are within them". Blue text: "Supported Skills create Cursed Ground [...]"

Cannot link Persistent Ground 1 Support. "Supports Skills which create Ground Surfaces, causing created Surfaces to last much longer."

Cannot link Encroaching Ground Support. "Supports Skills that create Ground Surfaces, causing those Surfaces to grow over time, up to a limit."

Whats even weirder is you can use the cursed ground support gems in the Blasphemy skill but they dont work.

Yeah, so... Cursed Ground says ground in the name, but it's actually a "runic inscription"... not an actual ground effect. So the only way I see them fix this is by changing the name to Curse Rune or whatever. Though I would love it if I could make them stick around for even longer or spread. But they already work with basic skill duration and skill AoE supports, so double dipping is unlikely.