SUMMARY
It's the time of the day when the night color should shift all colors. I login to my user with night color activated, but there's no color shifting. If I open the Night Color settings and disable then enable it again, then the shift occurs.

STEPS TO REPRODUCE
1. Enable Night Color and set it to Automatic, take note of the time of the time of the day in which it would activate
2. At that time, login to you user. You will see that there will be no change in colors
3. Open the Night Color settings. Disable it, then enable it again. The colors will change

OBSERVED RESULT
No color shifting at login.

EXPECTED RESULT
When it's the time of the day in which there should be a change in colors, it should be triggered at login.


SOFTWARE/OS VERSIONS
Operating System: Kubuntu 19.10
KDE Plasma Version: 5.17.1
KDE Frameworks Version: 5.62.0
Qt Version: 5.12.4
Kernel Version: 5.3.0-19-generic
OS Type: 64-bit
Processors: 8 × Intel® Core™ i7-4790 CPU @ 3.60GHz
Memory: 15,6 GiB

ADDITIONAL INFORMATION
NVIDIA GTX 1060 on 430.50 drivers on Xorg