Ardent Censer no longer has healing on hit
Passive effect's Attack speed bonus changed from [25%] to [20-35% based on target's level]. Passive changed from [attacks drain 25 health on-hit] to [attacks deal an additional 20 - 35 on-hit (based on target's level)]
http://www.surrenderat20.net/2017/09/914-pbe-update-eternal-sword-yi-chroma.html#more
could have been a balanced and very good item for ADCs who do DpS and not BpS, this change clearly tells that Riot wont look at Crit + attack speed scaling problem for a long time to come.
combo will be more popular now and nothing will be solved except gutting Supports kits and items.