Windows Terminal version (or Windows build number)

19042.1165

Other Software

VS Code
Version: 1.61.0-insider (user setup)
Commit: ec40cbe164c59f3d13b6eff5fc7b0231ec0ab7aa
Date: 2021-09-13T05:15:14.689Z
Electron: 13.1.8
Chrome: 91.0.4472.164
Node.js: 14.16.0
V8: 9.1.269.39-electron.0
OS: Windows_NT x64 10.0.19042

Steps to reproduce

Redefine the prompt to inject OSC sequences, for example:

pwsh:

function Prompt() {
  return "`e]133;before`u{7}middle`e]133;after`u{7}"
}

wsl.exe:

export PS1='\x1b]133;before\x07middle\x1b]133;after\x07

When this gets run through conpty all the OSC sequences seem to get front loaded, not put in the order that they are defined.

Expected Behavior

I expect the terminal to receive the following:

�[?25l�[12;7H�]133;before�middle�]133;after�
�[?25h

Actual Behavior

�[?25l�[12;7H�]133;before��]133;after�
middle�[?25h