How to reproduce the bug :
- Select 'en.wikipedia.org' on Dashboard (or any other specific wiki with significant data to visibly see the bug).
- Go-to Unique Devices Metric.
- Change filter & split to ‘Split by access site’ (optional).
- Select 3-months time-range & observe the graph & the URL carefully.
- Click on 3-months again and see the graph & URL changing.