Bug#795269: TMPTIME not honored anymore

[MI]

I tried to configure it in /etc/tmpfiles.d/tmp.conf but all files still get deleted 
on reboot.

I have this line in the file:

     D /tmp 1777 root root 30d

What can I do to prevent systemd from deleting all files in /tmp on reboot?

I also feel the severity of this bug is more than "normal" since it leads to data 
loss.  Some may consider it bad practice to keep files in /tmp, but many people do 
that for some temporary files and configured TMPTIME according to their needs.

There should also be a warning in /etc/default/rcS explaining that setting TMPTIME is 
useless (and maybe the other variables as well?).