Comment # 4 on bug 938258 from Dr. Werner Fink

(In reply to Matwey Kornilov from comment #3)

The change the default configuration, which is documented at man:tmpfiles.d(5).
You may also read /usr/lib/tmpfiles.d/gvfsd-fuse-tmpfiles.conf from package
gvfs-fuse:

 # This is a systemd tmpfiles.d configuration file
 #
 # tmpfiles.d defaults are set to clean /run/user every now and then
 # which includes our gvfs-fuse mount being mounted in /run/user/<id>/gvfs
 #
 # This file adds an exclusion rule so that user data don't get automatically
 # cleaned up (i.e. destroyed).
 #
 # Due to our fuse mount restrictions root can't access nor stat the mountpoint
 # resulting in warning spitted out by the systemd-tmpfiles process. Please
 # ignore it for the time being until proper solution is found:
 # https://bugzilla.gnome.org/show_bug.cgi?id=560658

 x /run/user/*/gvfs

and indead:

 d136 /suse/werner> whoami
 werner
 d136 /suse/werner> ll /run/user/`id -u werner`
 total 0
 dr-x------ 2 werner suse  0 Jul 16 09:17 gvfs
 drwxr-xr-x 2 werner suse 40 Jul 16 09:13 systemd
 d136 /suse/werner> sudo -i
 d136:~ # whoami
 root
 d136:~ # ll /run/user/`id -u werner`
 ls: cannot access /run/user/223/gvfs: Permission denied
 total 0
 d????????? ? ?      ?     ?            ? gvfs
 drwxr-xr-x 2 werner suse 40 Jul 16 09:13 systemd
 d136:~ # 

root is not allowed to access my active gvfs mount point.