[Python] PyCharm Flask configuration uses the wrong folder as working directory?

For no apparent reason, Flask decided to use a folder one level above the actual project directory.

Project details:

• Working directory in Run/Debug is set correctly
• Python console in PyCharm starts in the correct directory
• The parent folder is mentioned once -- in the "Paths to .env files" field, where a single .env file is included
• Settings -> Project: projectname -> Project Structure shows the correct structure (intended working directory is set as project root)
• Just in case, I set the working directory for both Python and Flask consoles in Settings -> Build, Execution, Deployment -> Console to project root

Despite the working directory being set in every place I could think of, when I try to use the project, I get an error because it tried to load a file from the parent directory (e. g. ~/file.yml instead of ~/projectname/file.yml).

Running the project manually via the default Python configuration with the same working directory and env file path settings works fine.

What am I missing?

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