Kerbal Space Program

When I go into the R&D lab to research new technology using science, I select the tech I want and choose to spend my points on but when I do this, the game doesn't show me the next bunch of parts on the tech tree. When I leave the R&D facility and then enter again, the tech tree has updated and shows me the next options along. This is annoying when I have a large amount of science to spend as I must constantly leave and enter the R&D facility after researching a single piece of technology. I have tried a clean reinstall on Steam, same issue. The game does it with and without mods regardless. When I click to research a piece of technology, the tech icon doesn't light up green to confirm I've researched it until I've left and re-entered the facility. I didn't have a problem in the older versions before 0.25. Any help?