I've noticed a small bug on my current Tutu playthrough.
Issue: My half-orc fighter has 20 CON, which grants him a small amount of regeneration over time. I've noticed on some occasions when I load a quicksave all of his HP have recovered despite being nearly dead when the quicksave was saved.
It doesn't always happen, however it was happening often enough that all I needed to do was to continually reload a quicksave until I got this result. Admittedly PCs who have 20+ CON are few and far between so it's not a gamebreaker.
Expect Result: HP should remain the same and not magically increase back to full if you have regen after loading a save.