Heads up: Lookup column and multiple values

There is a new setting when using a lookup column, "Allow multiple values". This means that you can choose several values from the lookup column. Great! But you can use the column in views for sorting or grouping, but it can be used for filter. A drawback ofcourse. Uncheck "Allow mulitple values" and it can be used for sorting and grouping again. The same behaviour goes for column "Choice" when using "Checkboxes"