Any idea why this is happening?

if you model the floor, walls and roof together in a single mesh, you probably won’t have leaks like that. You will probably have to set your objects to cast two sided shadows too.

Nothing worked. Seems like the the lightmass calcs arent loading since this what it looks like in editor until the lightmaps load. Any idea why they wouldnt load in game? 4.16.2

The lightmaps are perfect in editor, but when I package the game and run it it looks like the shadows are gone and I’m getting light bleeding at the corners. The wall geometry is solid, my direct light, skylight is stationary, and I have an editorsphere with an hdr mapped to it.

The lightmap res on the wall is 1024. I’m also getting some weird shadows on the chair seat cushion and the sphere.

The wall and floor is built as one piece. I’ll try the two sided shadow suggestion.