I imagine that the reasoning behind not updating everything while the player is static was that it saves performance; only collide when velocity is > 0. this makes sense for general actor movement because you don’t want potentially hundreds of moveable objects ticking collisions when they aren’t going anywhere, but for the player it should 100% be toggleable. you’d think the “enable CCD (continuous collision detection)” flag would do this, but it seems to only work when simulating physics 
i’m not completely unoptimistic that this could be implemented in a later ue5 update, i’m just surprised it isn’t a more public concern. if enough people request it, there’s a good chance it could be implemented in Mover 2.0, if not CMC. I’ll need to take the time and submit some requests in their feedback page!