Did you test in Multiplayer, Bloody? And is the Server running Forge 1286?
Some reportet texture issues with newer Forge version. I'm using Forge 1286 for weeks now and never saw any problem. So it is likely a problem only occurring in special cases.
I am doing the same as Blodd Asp and can't see any problems at all and I am running a small server on 1286 with a few mods.
Never had any problem with Forges above 1263 and always used them.