[1.58][SSP]Monitors don't render properly while looking at an expanded monitor with the bottomleft-most monitor offscreen

ComputerCraft Version Information: 1.58 Client

Description of Bug: Monitors glitch when bottom-left-most monitor in an expanded monitor is offscreen. Causes a crash if save and quit while looking at glitched monitors and reload saved world.

Steps to Reproduce Bug:

1. setup a large monitor
2. look at monitor and position the viewpoint in such a way that the bottom-left-most monitor block is offscreen (causing others to not render properly)
3. save and quit to title
4. reload the same world and game should crash

Possibly related to other monitor-related crashes
Possibly occurs in SMP and server

Minecraft Version: 1.6.4
MinecraftForge Version: 9.11.1.965

Installed mods:

• Optifine 1.6.4 [HD U C8]
• ComputerCraft 1.58
• ComputerCraft Turtles 1.58

Please try to reproduce this without optifine installed. I can't reproduce the bug, but I don't have optifine installed.

I can confirm optifine causes this issue. I noticed the same thing when I installed optifine, and thus I don't use it.

Optifine is useless in my opinion, sure it reduces lag but it causes so many issues. This bug, the "overlapping text" bug, other bugs with other mods…