I installed the cantab-theme which also installs xscreensaver.
It runs fine, and as it sould except on boot-up. It appears that when I boot up my Pi to Pixel desktop, the xscreensaver auto starts my selected screen saver as soon as I enter the desktop GUI. Even though my screen saver is set to start after 16 minutes.
It only seems to happen when I boot up my Pi more then 15-30 minutes prior as it seem if I just reboot my Pi that it doesn't do this.
Could it be possible that it has to do with the fact that the system clock has to sync with the internet at boot up thus telling the system that x amount of time has pass now it's time to boot screen saver??
As it only happens when I boot up my Pi more then 15-20 minutes after the last boot up. But if I shut down and just boot up immediately after 5 minutes or reboot the Pi it doesn't auto start the screen saver.