An update, for the developers, in case this helps: the sunset alert notification (which I have set for 30 min prior to sunset) displays a time an hour before actual sunset as well, so its off just like the watch face. And best I can tell, its been that way since the time change as well.
In other words: actual sunset is 19:56, but the notification says 18:56, even though it triggers at the right time (19:26 in this case)
I also uninstalled and reinstalled the watchface…and it did not fix anything…