Happens on all versions of project red and all known versions that its compatible with of minecraft versions
I use 1.7.10 preferably
like i said it doesnt matter if its the only mod im using or if i have 200 mods the behavior is the same.
doesnt matter if i have optifine or not either.
its literally either a bug or hasnt been looked into yet.
ive tried even on a different computer with different minecraft launcher and updating my java version and it makes no difference..
Happens in singleplayer or on a server. Same thing