Hello Droid,
I am currently playing Book II (I have downloaded it in March this year) and there is a bug : when i click on an autosave at the end of an act, I cannot continue. Nothing happens when I click on the character on screen. I have currently played the two first acts, so I actually don't know if it is present for all of them. It is not a big problem for me (I just make sure to save once the next act has already started), but still I thought it is something that you probably wanted to know. I have checked and Book I (version 1.07b, from early 2021) doesn't have this bug.
I would like to take this opportunity to say the game is absolutely awesome, I enjoy it very much, thank you !