My Lenovo 305-15IBD is also affected. I'm dual-booting Win 10 and Ubuntu 17.10. I can see the option to boot from USB in the BIOS settings as well as in the boot manager, but if I change the boot order it doesn't save, and if I try to boot from USB from the boot manager I get an error. Grub is otherwise working fine: I can still boot in both OS.
My Lenovo 305-15IBD is also affected. I'm dual-booting Win 10 and Ubuntu 17.10. I can see the option to boot from USB in the BIOS settings as well as in the boot manager, but if I change the boot order it doesn't save, and if I try to boot from USB from the boot manager I get an error. Grub is otherwise working fine: I can still boot in both OS.