How do I get the grid to show in Niagara's Preview Window?

At the top of Niagara’s preview window is Show > Grid, but this doesn’t turn on a grid at all. The floor from the Preview scene settings appears and is affected by the lighting choices in the preview window (lit, unlit, grid, etc…), but I don’t want the floor; just the grid. I’ve also changed the background color to make sure the grid wasn’t the same color as the bg but it still doesn’t appear. If there isn’t an oversight on my part, is this a bug?

UE5.0.0-166…*Early Access
Windows 10 Pro
Intel i7-6950X@3GHz
128GB RAM

The grid shows up fine for me in UE5.
Did you try to move the camera around a bit? The grid doesn’t show if you at it from the side.