After July 2017 service update, the configuration done for Smart filter got replaced by default settings in PowerBI service. Changes and format done for smart filter has been gone, it is affecting all our reports.
Behaviour of the filter has also been changed,
1. On selection of drop down list, two filters get opened parallely. To close the list we have to click the drop down list again
2. On setting of "Send to back", while clicking drop down list is going behind the visual before selecting the values
3. On setting of "Bring to front", it will hide other visual behind no transperncy was there.