Directory listings in JupyterLite not updated

[psychemedia]

After creating a file from code, it appears to exist in file storage but is not listed in the file browser:

import os
os.mkdir("test1")

with open("test1/test.txt", "w") as f:
    f.write("test....")

I would expect to see the created file in the file listing as in the following case without the unfold extension:

I observe something similiar using the jupyterlite WebR kernel when creating files from R.