id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
19858	water=tidal without intermittent	josm.sanspourriel	josm.sanspourriel	"https://josm.openstreetmap.de/browser/josm/trunk/resources/data/validator/combinations.mapcss
natural without water=intermittent on https://www.openstreetmap.org/way/228749517.

I don't get it, at least the error message should be improved. water=tidal implies that it's intermittent.
I guess the error is just the opposite (water=... without natural=water)."	enhancement	closed	normal		Core validator	tested	othersoftware