pyproject default working directory is not used for runtime configuration

Steps to reproduce:

• Step #1: Start QtCreator and create a Python Project
  -> Runtime Configuration shows the correct working directory

• Step #2: Close & reopen QtCreator
  -> Runtime configuration shows an empty workdir path (referenced files are not found at runtime)
  -> stderr output:

  file:///home/<user>/MyFile.qml: No such file or directory
  

The *.user file contains the following:

 <value type="QString" key="RunConfiguration.WorkingDirectory"></value>
<value type="QString" key="RunConfiguration.WorkingDirectory.default">/path/to/workdir</value>

After restarting QtCreator the working directory in RunConfiguration appears empty

After setting the path explicitly in the QtCreator runtime configuration the error no longer occurs.

The *.users file now contains the following:

 <value type="QString" key="RunConfiguration.WorkingDirectory">/path/to/workdir</value>
<value type="QString" key="RunConfiguration.WorkingDirectory.default"></value>

FYI: By deleting the *.user file the process is repeatable/reproducible.