Hi, I’m currently facing the same issue on a clean incus install (v0.5-1) on arch.
root@system ~ % cat /proc/self/mountinfo 2024-01-27 20:46:49
22 27 0:21 / /proc rw,nosuid,nodev,noexec,relatime shared:5 - proc proc rw
23 27 0:22 / /sys rw,nosuid,nodev,noexec,relatime shared:6 - sysfs sys rw
24 27 0:5 / /dev rw,nosuid,relatime shared:2 - devtmpfs dev rw,size=6990568k,nr_inodes=1747642,mode=755,inode64
25 27 0:23 / /run rw,nosuid,nodev,relatime shared:12 - tmpfs run rw,mode=755,inode64
26 23 0:24 / /sys/firmware/efi/efivars rw,nosuid,nodev,noexec,relatime shared:7 - efivarfs efivarfs rw
27 1 254:2 / / rw,relatime shared:1 - ext4 /dev/mapper/arch-root rw
28 23 0:6 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime shared:8 - securityfs securityfs rw
29 24 0:25 / /dev/shm rw,nosuid,nodev shared:3 - tmpfs tmpfs rw,inode64
30 24 0:26 / /dev/pts rw,nosuid,noexec,relatime shared:4 - devpts devpts rw,gid=5,mode=620,ptmxmode=000
31 23 0:27 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime shared:9 - cgroup2 cgroup2 rw
32 23 0:28 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime shared:10 - pstore pstore rw
33 23 0:29 / /sys/fs/bpf rw,nosuid,nodev,noexec,relatime shared:11 - bpf bpf rw,mode=700
34 22 0:30 / /proc/sys/fs/binfmt_misc rw,relatime shared:13 - autofs systemd-1 rw,fd=37,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=13354
35 23 0:7 / /sys/kernel/debug rw,nosuid,nodev,noexec,relatime shared:14 - debugfs debugfs rw
36 24 0:31 / /dev/hugepages rw,nosuid,nodev,relatime shared:15 - hugetlbfs hugetlbfs rw,pagesize=2M
37 24 0:19 / /dev/mqueue rw,nosuid,nodev,noexec,relatime shared:16 - mqueue mqueue rw
38 23 0:12 / /sys/kernel/tracing rw,nosuid,nodev,noexec,relatime shared:17 - tracefs tracefs rw
39 23 0:32 / /sys/kernel/config rw,nosuid,nodev,noexec,relatime shared:18 - configfs configfs rw
40 23 0:33 / /sys/fs/fuse/connections rw,nosuid,nodev,noexec,relatime shared:19 - fusectl fusectl rw
42 27 0:34 / /tmp rw,nosuid,nodev shared:42 - tmpfs tmpfs rw,nr_inodes=1048576,inode64
44 27 259:1 / /boot rw,relatime shared:44 - vfat /dev/nvme0n1p1 rw,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro
46 34 0:35 / /proc/sys/fs/binfmt_misc rw,nosuid,nodev,noexec,relatime shared:46 - binfmt_misc binfmt_misc rw
91 31 0:46 / /sys/fs/cgroup/net_cls rw,relatime shared:270 - cgroup net_cls rw,net_cls
436 25 0:59 / /run/user/1000 rw,nosuid,nodev,relatime shared:575 - tmpfs tmpfs rw,size=1402844k,nr_inodes=350711,mode=700,uid=1000,gid=1000,inode64
485 436 0:60 / /run/user/1000/gvfs rw,nosuid,nodev,relatime shared:618 - fuse.gvfsd-fuse gvfsd-fuse rw,user_id=1000,group_id=1000
687 436 0:61 / /run/user/1000/doc rw,nosuid,nodev,relatime shared:636 - fuse.portal portal rw,user_id=1000,group_id=1000
93 27 0:44 / /var/lib/lxcfs rw,nosuid,nodev,relatime shared:258 - fuse.lxcfs lxcfs rw,user_id=0,group_id=0,allow_other
268 27 0:45 / /var/lib/incus/shmounts rw,relatime shared:279 - tmpfs tmpfs rw,size=100k,mode=711,inode64
319 27 0:52 / /var/lib/incus/guestapi rw,relatime shared:291 - tmpfs tmpfs rw,size=100k,mode=755,inode64