Environment data

• VS Code version: 1.21.1
• Extension version (available under the Extensions sidebar): 2018.3.1
• OS and version: MacOS 10.13.4
• Python version (& distribution if applicable, e.g. Anaconda): 3.6.4
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): venv
• Relevant/affected Python packages and their versions: None

Actual behavior

All breakpoints are ignored when debugging Python from inside a venv.

Expected behavior

Breakpoints are not ignored.

Steps to reproduce:

Using:

import sys
print(sys.version)
print(sys.executable)

Put a breakpoint on line 2

Logs

Output for Python in the Output pane

Output from Console under the Developer Tools panel

3.6.4 (v3.6.4:d48ecebad5, Dec 18 2017, 21:07:28) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]
/Users/chris/Code/Python/np/bin/python

Configuration Files

launch.json

{
    "name": "Python: Current File",
    "type": "python",
    "request": "launch",
    "pythonPath": "/Users/chris/Code/np/bin/python",
    "program": "${file}"
}

settings.json

{
    "python.pythonPath":"/Users/chris/Code/np/bin/python",
    "python.autoComplete.addBrackets": true
}

Notes

When I run the same code using the system installation the debugger works fine.

The issue also only persists when the type is set to python and not when it is set to pythonExperimental.