I can write what happend to me: After updatin the Launcher Today, the ingame overlay was completely gone. Sounds worked and kill streak counter also worked and displayed. Only the KDR etc. session stats were gone. shift f3 did not bring it back.
I tried several things and what finally helped me was resetting the hotkey to toggle the overlay (it was shift f3 before and shift f3 after but it only worked after clicking the reset button). Dont know if that helps but I hope so.