I came across this problem in UE 4.24 with a slight different behavior, in 4.24 PIE Play was de-selecting the actor, imagine having 100 actor in outliner and scrolling to find that specific actor. Stopping PIE also de-selects and have to find it again. (The only option we have was locking the details panel or filtering the name but again this is too many repetitive clicks and typing)
I’ve submitted a bug and got response that it’s a known problem and will be fixed in 4.25, now I tried 4.25 Preview 5 and PIE Play is behaving as expected, selected actor properties is visible in Details panel on Play…
but PIE Stop still de-selects the actor, so I guess it’s half fixed?
Sorry for my terrible English, thanks and be safe 