Issue description:
When adding text onto a computer screen module using OpenComputers, there is no limit to the width - producing a possibility for near infinite text (aside from render distance)

Steps to reproduce:

• Link screen with controller next to a computer
• Set label on Computer Module in screen
• Add a lot of text (greater than width of screen) with addText method
• See error

Versions:

• Minecraft: 1.12
• Forge: 14.23.5.2823
• McJtyLib: 1.12-3.1.1
• RFTools: 1.12-5.64
• OpenComputers: 1.7.4.153

I am using various optimization mods- namely BetterFPS and other "fix" mods like FoamFix and VanillaFix. However, I do not believe they are contributing to this bug in any way.

Possibly incompatible mods and versions:
Not likely any other mod causes this.

See screenshots:

Bug persists with other sizes / rendering types:

My bad code that showed this error:

Obviously I should be using some sort of set method / clear method

Expected behavior:
Text cuts off or wraps or resizes

I hope I was thorough enough and included necessary details! I know how annoying it can be to not have enough detail on a bug- and I imagine it gets worse when you have such a busy issue tracker.