This issue seems to exist in OpenRC installations only. I can mount other memory cards but trying to mount SDXC card gives me an error ending with this suggestion:
stderr: `fuse: device not found, try 'modprobe fuse' first
Indeed, if I run modprobe fuse first I can mount the card.
How can I get around this? How can I put this command in startup (XFCE) to run as root if that is only solution?