Scene will only display one Reflection Capture at a time?

Hi- I’ve created a scene with still water reflecting nearby objects. I’m adding multiple small/local cube reflections capture to keep the reflections as accurate as possible. When I add the first, everything looks great in that one area. When I add a second, that area looks great as well, but suddenly the reflections from the first capture cube disappear. I can toggle them both visible and invisible, but only one is visible at a time. Does anybody know why this is? They also don’t overlap at all. My understanding is that you can have complex, layered refection environments including multiple overlaps, so I have no idea why only two separate captures would be a problem.

Best,
Ian