Can't identify ‘~’ unanimously

[weqopy]

Environment data

• VS Code version: 1.25.1
• Extension version (available under the Extensions sidebar): 2018.7.1
• OS and version: macOS High Sierra 10.13.6
• Python version (& distribution if applicable, e.g. Anaconda): 3.6.5
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): virtualenv
• Relevant/affected Python packages and their versions: No

Actual behavior

settings like these:

"python.linting.pylintPath": "~/venv/bin/pylint",
"python.formatting.provider": "black",
"python.formatting.blackPath": "~/venv/bin/black",

pylint works fine but black doesn't:

And it works well after I change it to
"python.formatting.blackPath": "Users/Username/venv/bin/black",

Expected behavior

vscode-python should identify ~ all the time.
"python.formatting.blackPath": "~/venv/bin/black", should works well.