It looks like the Mortal Kombat 1 launch trailer marketed for Nintendo Switch shows a Steam achievement pop up.
Mortal Kombat 1 announced for Switch, mortal kombat 1 release date
Nintendo Switch - Hardware Review ~ Chalgyr's Game Room
Mortal Kombat 1 - Nintendo Switch Steam Achievement Launch Trailer
Mortal Kombat 1 Switch trailer featuring Steam achievement taken down : r/gamingnews
Mortal Kombat 1 Switch trailer featuring Steam achievement taken down, mortal kombat 1 steam
Mortal Kombat 1 announced for Switch, mortal kombat 1 release date
Nintendo Pulls Mortal Kombat 1 Switch Trailer After Steam Controversy - FandomWire, mortal kombat 1 steam
Mortal Kombat 1 fans notice Steam pop-up in Switch version's launch trailer – Destructoid
Mortal Kombat 1 Steam achievement pops up in Switch gameplay trailer, mortal kombat 1 steam
Mortal Kombat 1 Switch Trailer Used Steam/PC Footage In Blatant False Marketing