Thanks for the feedback Alejandro. So it looks like the raw-usb interface doesn't help indeed, what chromium needs read access to to access your key is the following:
/run/udev/data/c238:0 /run/udev/data/c239:0 /run/udev/data/c240:0 /run/udev/data/c240:1 /run/udev/data/c240:2
And there doesn't seem to be any existing interfaces for those.
To switch back to the stable channel, you can just do:
sudo snap refresh chromium --stable
Thanks for the feedback Alejandro. So it looks like the raw-usb interface doesn't help indeed, what chromium needs read access to to access your key is the following:
/run/ udev/data/ c238:0 udev/data/ c239:0 udev/data/ c240:0 udev/data/ c240:1 udev/data/ c240:2
/run/
/run/
/run/
/run/
And there doesn't seem to be any existing interfaces for those.
To switch back to the stable channel, you can just do:
sudo snap refresh chromium --stable