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Did the RectLight change for UE5?

In UE4, I felt like the RectLight would emit light evenly across the bounds of the source width and height. Un UE5, it looks like the light source emits outward from the origin of the actor. Is this intentional? Maybe a button I can toggle to swap functionality?

Cast shadows from rect lights have always worked this way. You can only get accurate shadowing from them through lightmass, raytraced shadows, or lumen (I think?)

Is that true? In 4.26 (with RTX) I’m seeing the light span evenly across the light source’s parameters:

But in 5.0 (with lumen) I’m seeing light emit from the actor’s origin:

Guess it still requires raytraced shadows/lightmass then