Sleep and suspend are still kinda buggy on Linux, and probably will be for the near future. This is more of a vendor thing (as most of the annoying problems in Linux) than a dev thing. To the point where I mostly avoid it, I either shutdown the laptop completely or just let it plugged on a desk 24h

Things are improving, and we should see this fixed in the next years I assume. This is the good thing about it, Linux will probably be fixing all annoying bugs in the next few years.