...1. When I adjust the sliders the planet screen behind it should update the turns to completion. If the active window is a problem then the Govern Planet screen should have the build queue showing the adjustments. At the very least upon exiting the Govern Planet screen the Planet screen should update the build order times...
I know it's not ideal, but a work around is to simply stay in the planet screen and click on the arrow to go to the next planet and then go back. The build times will be updated then.