After installing the April security update for Android Pie (only because I didn't enjoy the constant nagging of the update notification) some (not all) of my notifications turned white (mostly weather apps) and other colors (clock is now purple).
I have tried restarting the phone, uninstalling and re-installing the apps in question, turning dark mode on and off again, and turning GoodLock's QuickStar on and off. But nothing has worked. These notitifications used to be either dark (when Quick Star wasn't enabled) or transparent (with Quick Star) but now they're often white (even though System settings and Bluetooth and Sound dialogues are all dark) or some other color, on some you can't even read the text.
I'd like to know if this is a bug, if this is a case of Dark Theme not working as intended. Or if this is how it's meant to be from this update onwards.