ComputerCraft has been using the TBO rendering method, and we are switching to VBO because optifine/optifabric shaders wont become scuffed with it,

For more details veiw @hugeblank 's posts about canvas on this issue
https://github.com/Merith-TK/cc-restitched/issues/9

To be clear - neither TBO, nor VBO rendering methods are functioning properly.

I think the best demonstration of this bug is image 2, where the computer screen renders improperly. This happens in both TBO/VBO mode of CC on canvas, but doesn't occur in any other mod/shader extension.