Comment # 25 on bug 1101393 from Maurizio Galli

(In reply to Stanislav Brabec from comment #24)
> xscreensaver-5.43 is now going to Factory.
> 
> It fixes lock after fade in a different way.
> 
> It adds systemd assisted lock on suspend.

Thank you for the work! At least with my current setup the issues with
xscreensaver seem to be completely gone. 
Although Xfce uses xfce4-screensaver now and has some issues being ironed out
as well, I'd like to close this report as fixed.