When streaming a game with Remote Play, mouse cursor motion is sent to the other PC as expected, but the local cursor is not moved. Cursor style changes and hide/reveal happen but the local cursor never moves. The only way to move both remote and local cursors in game is with the guide button chord commands. I'm using the libextest.so bazzite distributes right now, but I'll build it myself and try that just as soon as I get to grips with the whole toolbox thing.