I've been playing a lot of Fallout 4 over the holidays. I started and finished the Nuka World DLC (killed all the baddies), made it to level 90, etc.
Today I was playing on my Deck as the battery got a little low (11%) so I saved my game, exited the game, and went to shut down.
As it was shutting down, the Deck displayed a message, something like "Syncing to Steam Cloud" as the logo was spinning.
A few hours later, on a full charge, I booted it back up, started Fallout 4 again and... some of my old saves are there, but only about 30% of them, and critically not the most recent ones.
Has this ever happened to anyone else? Is this a known issue? Can I fix it, or report it? I've basically lost interest in finishing the game now.