U5 Terrain isn't colliding correctly

Since I have updated to U5 new terrains I make have strange colliders. I raise and lower the terrain a bit, then when I use the first person controller, I walk through the hills I just made. I don't fall through the terrain, it just acts like the collider is still flat.

What's stranger is that there seems to be "invisible" hills in the terrain. Almost like its using a different terrain collider.

Thanks!

 

Workaround is to save the scene every time after editing the terrain but something's definitely bugged.

 

Thank you Orost, you solved this annoying issue.

 

Thanks saving the scene fixed the problems I was having with the terrain