[At least CC 1.4+][SMP/SSP]Scrolling Bug With Function read()

I have noticed this for a while now, especially when I'm using the 'lua' program.

ComputerCraft Version Information: 1.4+ Client / 1.4 Server

Description of Bug: When calling read() and typing past the end of the screen, and then going left and right, the last character stays on screen. Yeah. Bad explanation. But try the reproduction steps. You'll see what I mean.
Screenshots!


Meh, bad screen examples.

Steps to Reproduce Bug:

• Either stay in CraftOS, call read(), or use the lua program
• Enter enough characters to make it scroll to the left
• Press the left arrow on your keyboard
• Press the right arrow on your keyboard until the text no longer scrolls
• See a duplicate letter in the last column, where there should be none

Looks like someone just forgot to update the last column with a space when scrolling past it.

ive noticed this too
simple fix is to add a space after the render

Sometimes the last character multiplies for me when scrolling
EDIT: also it is a ghost character because it is not returned