Night time color temp not changing since update, KDE Plasma

Relative novice, sorry if I get some details/terms wrong. Been running a KDE Plasma install for about 9 months and it's awesome. Since I did a last update from the desktop, the nighttime color temp settings don't change. It's always warm unless I manually suspend it. I tried undoing and redoing the setting. The clock is correct and settings all seem correct, but it won't cycle. Any help you have is appreciated in advance.