python.autoComplete.extraPaths does not appear to be working #1462

Environment data

• VS Code version: insiders
• Extension version (available under the Extensions sidebar): master
• OS and version: Windows 10
• Python version (& distribution if applicable, e.g. Anaconda): CPython 3.7.0b3
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): venv
• Relevant/affected Python packages and their versions: N/A

Actual behavior

No auto-complete for a file only found through python.autoComplete.extraPaths

Expected behavior

Auto-complete.

Steps to reproduce:

1. Create a ~/Desktop/extras folder.
2. Create a file named foobar.py in that folder containing def spam(): pass
3. Set python.autoComplete.extraPaths to point to the extras folder
4. import foobar; foobar. should have spam in its completion list.

Logs

Output for Python in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Python)

None

Output from Console under the Developer Tools panel (toggle Developer Tools on under Help)

None