Huh … it seems like either something in the game is doing something, or a recent Steam Beta client update has zonked out the shortcut keys to the overlay.
I’ve tried remapping the tab for character stuff to caps lock, but I can’t seem to get to the steam overlay. Equally, Steam Overlay is enabled in Steam. I’ve disabled / re-enabled that, and restarted the PC.
AMD graphics, AMD chip/chipset, etc, Win 10.
The AMD overlay works, fwiw, and I’ve changed that map to CTRL+ALT+SHIFT+R.
Is anyone else seeing this, or has seen it in the past?