Stage Manager Mac with Dual Displays?

I have an iMac and a second display. I turned Stage Manager on. When I move my mouse to the left side of the iMac's display, which is the left monitor, then the Stage Manager app icons pop out. When I move my mouse to the left or right edge of my second display nothing happens. I have to click somewhere on the second display's desktop to make the visible app hide and the Stage Manager's app icons appear. Is there a setting or some other way to make Stage Manager work on my second display like it does on my iMac's display?