Paul White (@SQL_Kiwi) follows up on his thorough breakdown of indexed view maintenance with the details of a bug that can render an indexed view incorrect.
Erin Stellato (@erinstellato) of SQLskills explains another reason she avoids the built-in sp_updatestats procedure: it doesn't consider indexed views.
Here is some information about an important MERGE "wrong results" bug, involving indexed views, that could be affecting the accuracy of your queries right now, and what options you have for working around the problem.