Public bug reported:

  I'm writing a shell script that draws in color to any VT-100 terminal.
The terminal in Ubuntu consistently and randomly drops out of graphics
mode producing huge glitches.  This does not occur in Xterm or Gnome
terminal on CentOS.

Appearance:
  The image from the file below should look like a color filled square, what 
you see is a "glitch" which looks like the second half of an escape command 
followed by a lot of "a"'s where the graphical checkerboard character should be 
rendered (in Ubuntu Gnome terminal it is rendered as a cursor that is the color 
of a 50% blend between the background and foreground color, making it the best 
appearing terminal I've used)

Reproducibility:
It is 100% reproducible with the instructions below.

To reproduce:
  Save the text below to file.txt (or all the text in this window) 

  In Gnome-Terminal try "cat file.txt" over and over to see the error.

  In Gnome-Terminal try "less -r file.txt" and scale the terminal window
to see variation

Comments:
   I don't know if there is a problem where characters are dropped from stdin, 
or if the pipe is getting reset, or if the emulator can't keep up with the 
commands, or if there is a(n inconsisent) limit to the number of command codes 
that can be sent to the terminal. Or if it is being interrupted, or if it 
randomly resets...

file.txt (tried to attach as "screen-capture.txt"):
 File  Rendering 
 Lighting  
c[?25l(0)0  
 
aaaaaaaaaaaaa
   
aaaaaaaaaaaaa
    
aaaaaaaa
  
aaaaa
 
aaaaa
  
aaaaaaaa
 
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
aaaaa
 
aaaaaaa
 
aaaaa
  
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  
aaaaaa
 
aaaaaa
  
aaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  
aaaaa
  
aaaaaaaaaaaaaaaaaaaaaaaaa(B)B(0)0
       
 
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  
aaaaaaa
   
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  
aaaaaaaa
 
aaaaaaaa
  
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  
aaaaaa
 
aaaaaaaa
 
aaaaaa
  
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
aaaaaaaaa
  
aaaaaa
 
aaaaaa
  
aaaaaaaaa
 (B)B File 
 Rendering  Lighting 
 

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: gnome-terminal 3.6.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-147.196-generic 3.13.11-ckt39
Uname: Linux 3.13.0-147-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.27
Architecture: amd64
CurrentDesktop: Unity
Date: Thu May 10 15:10:57 2018
InstallationDate: Installed on 2014-12-02 (1255 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: gnome-terminal
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gnome-terminal (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug third-party-packages trusty

** Attachment added: "File to test - try in terminal with "cat 
screen-capture.txt" or "less -r screen-capture.txt" and scale the screen."
   
https://bugs.launchpad.net/bugs/1770494/+attachment/5137413/+files/screen-capture.txt

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https://bugs.launchpad.net/bugs/1770494

Title:
  Does not display VT-100 control codes correctly/consistently

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