I can see blocks like Banners, Signs, Chests, Lanterns, and Bells trough blocks. Its mostly non full blocks that I can see trough. I have a mod pack with 6 mods and I thought quark was probably the issue. The other mods that are in it are AutoRegLib, Obfuscate, Optifine, Vehicle mod, and worldedit. It also only happens at certain angels too.

The most likely culprit here is optifine.

ok thanks