udev-171 will try to mount fusectl every time it runs (and do so with crappy mount options):
KERNEL=="fuse", MODE="0666", OPTIONS+="static_node=fuse", \
RUN+="/bin/mount -t fusectl fusectl /sys/fs/fuse/connections"
after the first mount, it'll just return an error when fusectl is already mounted
with udev-197, it no longer mounts fusectl directly. instead, it has a systemd unit file to handle it.
i'm thinking we just update /etc/init.d/sysfs to mount this at boot with our standard nodev,noexec,nosuid options.
This is implemented in commit 8a6c339.
Thanks for the report.