Disabling prebaked lighting

I built my lighting so I could see how the lights will look like in the game. However, now the editor won’t use shaders for lighting anymore. So, when I move an actor, the lights bug out. Earlier, it just used shaders to generate preview lighting. How do I get back the old behavior?

The new behavior:

http://puu.sh/c4FdH/8237853d54.jpg