Debugging with IPython module hangs in the latest release 2020.8.101144

[nathanrpage97]

Environment data

• VS Code version: 1.48
• Extension version (available under the Extensions sidebar): 2020.8.101144
• OS and version: Mac OS 10.15.5 (reproduced on Ubuntu 20.04 & CentOS 7)
• Python version (& distribution if applicable, e.g. Anaconda): 3.8.3 (3.7.8 for CentOS 7)
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): virtualenv & with None
• Relevant/affected Python packages and their versions: IPython 7.17.0
• Relevant/affected Python-related VS Code extensions and their versions: 2020.8.1
• Value of the python.languageServer setting: Pylance

Expected behaviour

Expected to be prompted with IPython repl

Actual behaviour

Debugger does not show repl. I can type, but it doesn't do anything.

Steps to reproduce:

1. Install IPython

2. Add to launch.json

{
      "name": "Python: IPython",
      "type": "python",
      "request": "launch",
      "module": "IPython",
      "cwd": "${workspaceFolder}",
 }

3. Launch debugger

Logs

cd redacted ; env redactd-workspacefolder/.venv/bin/python /Users/nathan.page/.vscode/extensions/ms-python.python-2020.8.101144/pythonFiles/lib/python/debugpy/launcher 55275 -- -m IPython 
Python 3.8.3 (default, Jul  7 2020, 17:44:59) 
Type 'copyright', 'credits' or 'license' for more information
IPython 7.17.0 -- An enhanced Interactive Python. Type '?' for help.

Note

I can fix by reverting to previous Python extension version 2020.7.96456

[nathanrpage97]

I believe that this is a subproblem of #367.