It renders too much while evaluating

I place the slider to a certain time and render window A and B. Works fine.
When I move the slider to a later time and ask to render, one of the windows renders the correct amount (one second in this case). The other window renders all the way from where I previously had the slider. Takes a long time. (2.0 MB)

The team is working on some issues that relate to the previews at this time. Thank you for sharing the logs, I will send them over for their review.