Ever since Watch OS 7 came out there is a bug with the California watch face but only with specific colors with always on display enabled. The activity complication for example will not be visible when display is dim/wrist down. When raising the wrist or waking the screen the complication pops up. This only affects Light titanium, gold, mango and warm gray colors. Every other color combo works fine and the complication is visible as it should be when display is dimmed.