for some reason, the pream fence gate had the #forge:fences and #froge:fences/wooden tag.. this is 1.20.1 btw

there is just a couple tags that say fence

what version of mod you've checked? version 1.0.1 doesn't have use of forge tags at all

I think it is cuz it has the minecraft tag for fences

but it's 1.0.1