Integrated terminal hangs whole window if big strings are printed in one go

• VSCode Version:

$ code --version
1.50.1
d2e414d9e4239a252d1ab117bd7067f125afd80a
x64

• OS Version: Ubuntu 20.04

Steps to Reproduce:

1. Open integrated terminal
2. Give it a command to print a long enough string.
3. It will hang midway.

Does this issue occur when all extensions are disabled?: Yes

So, I have a program which I wanted to test and so I made it print out some data to the terminal. Apparantly, it was 40kB worth of base64 encoded data. But the task never got completed because vscode window hanged midway. I tried it several times ( Even with extensions disabled and closing all other background apps). The same thing works just fine in a normal terminal.

Screenshots

With Extensions:

Extensions disabled:

Ok, I understand that its a rare use case but I don't think it was supposed to go this way.

[Tyriar]

/duplicate xtermjs/xterm.js#1515 #108317