• VSCode Version: 1.3.0-insider (de66522)
• OS Version: Win10 x64

Steps to Reproduce:

1. Install julia v0.4.6
2. Configure VS code terminal to use PowerShell
3. Start VS Code terminal, then start a julia instance in the terminal (I have an alias for julia in my PowerShell session, you might have to enter the full path)
4. Enter shell mode by typing ;, then enter the following characters dir /cmd or something like that, then hit Backspace a couple of times. You might have to fiddle around a little, my repo was not 100%.

I then get a screen that looks like this:

The prompt now is shown twice. Sometimes I also get the prompt moved to the right, jumping around etc. I have never seen that sort of behavior when I start julia in the normal windows command window, or anywhere else (Mintty etc.).