Forge 1.8 and DynamicTexture

So after updating and migrating my code to forge 1.8, I have noticed what I think is a bug with the DynamicTexture object, but I am not totally sure if I am just doing it wrong.

Currently I have my own texture loading code for skinning, which uses the DynamicTexture object and fills the objects texture data manually. It will then call DynamicTexture.updateDynamicTexture() to bind the texture before drawing it. However, it now seems to not be binding properly. I have checked and the DynamicTexture is properly getting its image data, but updateDynamicTexture() does not seem to be binding now, and attempting to bind with the raw texture ID and rendering with the Tesselator also does not work.

Anyone know if any changes that messed this up, and if I am just doing it wrong now?

Edit: Nevermind, turns out it is that the new tesselator cannot be used to render to the gui. I used a different method and is working fine now.