Issue moved out of sprint before start, still shows on Velocity Charts

When an issue is moved out of a Sprint before starting it (moved to Backlog or another Sprint) when the Sprint is Started, removed issue will still appear on Sprint Report.

Steps to reproduce:

1. Create a new Sprint
2. Create 3 issues and add them to the sprint
3. Move one out
4. Start the Sprint
5. Look at the Velocity Charts