UE 4.24.1 hard crash with low-res screenshots

When trying to take screenshots with screenshot size multiplier set to 1 unreal crashes. Im running a 2018 macbook pro and have made a full project on this machine earlier this year.

When selecting an area of the screen to take a screenshot of it creates this strange green square which I have not seen before, it almost like unreal does not have access to screen-capture, but I have checked my privacy settings and its not in the list.

Still in blockout phase very early in the project so the scene is not heavy at the moment. Any ideas?

fully updated drivers? maybe try it in windows