Just to let you know, I have tested this in both Optifine and Vanilla and this seems to be a problem in Optifine. This doesn't surprise me because the version of Optifine I'm using is still in its alpha phase, so it looks like I'll need to report it to the creators of Optifine themselves.
Just to let you know, I have tested this in both Optifine and Vanilla and this seems to be a problem in Optifine. This doesn't surprise me because the version of Optifine I'm using is still in its alpha phase, so it looks like I'll need to report it to the creators of Optifine themselves.