astruckm
While trying to get a video for you, i've found it happens sometimes regardless of a preceding escape close of the preview window. I'm not sure what the exact reproduction sequence is though (1). You can see in the video i've attached.. even after a click on x to close the preview, on open of a new preview window it will too push the app behind Orion.
(1) Following on RoxyRoxyRoxy reply I decided to try this again on both a new clean profile, but also a duplicated profile of my main one and this no longer occurred in neither! (somewhat interesting that the preview is opened on the earliest launched profile rather than being it's own isolated profile)
I guess my second problem was a result of a corrupted profile and so i'll consider it fixed as I can copy essentially everything from my original profile into a new one; I'm pretty sure the only user information it seems to leave behind is the programmable buttons(?).