An orthographic SceneCaptureComponent2D makes the bounds for my streaming level grow!

Why does adding an orthographic SceneCaptureComponent2D make the bounds for my streaming level grow significantly?

I realize that question is a bit terse. Here’s a screen shot before adding the blueprint with the scene capture component in it. Note the small square that outlines the level:

Here’s the same level with a scenecapture2d component in it (that is orthographic, and doesn’t have an orthographic width larger than the level):