BC 7.99.3 + 7.99.4 / MC 1.11.2

Screenshots showing problem: http://imgur.com/a/sJ7e5

Once a quarry is placed, held items will "phase through" blocks when you are close enough to said block. Removing the quarry makes this issue go away.

Mods

Specs

can you remove optifine and see if the bug persists?

I just checked, the issue does not appear with Optifine removed.

you'll have to report it on the optifine issue tracker then to get this fixed as optifine messes with rendering we can't fix it from our end

@sp614x

I turned the optifine option FAST RENDER: OFF and the bug is aparently fixed