Buffer displays glitch when viewing extremely long console output

Rather than describe it I captured a quick video of the issue here: https://www.youtube.com/watch?v=MTtWijO8tS8

Using Ubuntu 18.04, 4coder 4.0.29 demo.

Edited by Nick on Reason: Initial post
Yikes! That's a pretty solid bug report, thanks, I'll take a look.