snap fail to start if "/home" is not readable with wrong error message

[Mc]

When /home is not o+r , trying to launch snap applications fail with an error message like

"cannot create user data directory: /home/mc/snap/chromium/2424: Permission denied"

This "/home/mc/snap/chromium/2424" directory is obviously existing and accessible, and the only difference with a working configuration is the "o+r" flag on /home allowing to list all existing homes.

Hence, snapd is likely trying to list the contents of the "/home" folder (for some unknown reason), and reporting it as a more specific failure of an operation it's actually allowed to do.