light-locker bug affecting many users

[Teresa e Junior]

Many users are struggling with problems on light-locker, as seen on
xubuntu-users[1], reddit[2], Launchpad[3], GitHub[4], etc.

It was decided on 23rd November's Meeting[5] to replace light-locker
with xfce4-screensaver for Disco Dingo. Any ideas why it didn't
happen?

[1]:
https://lists.ubuntu.com/archives/xubuntu-users/2018-November/010834.html
https://lists.ubuntu.com/archives/xubuntu-users/2018-November/010856.html
https://lists.ubuntu.com/archives/xubuntu-users/2019-April/010979.html
https://lists.ubuntu.com/archives/xubuntu-users/2019-May/010997.html

[2]:
https://www.reddit.com/r/xubuntu/comments/boxfmq/xflock4_lock_screen_will_shutdown/
https://www.reddit.com/r/xubuntu/comments/bh8sep/laptop_screen_does_not_turn_on_after_waking_from/

[3]: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1801609

[4]: https://github.com/the-cavalry/light-locker/issues/114

[5]: https://lists.ubuntu.com/archives/xubuntu-devel/2018-November/011723.html