I've found a major issue with the auto-save setting in the latest Steam update.

The helptext on this setting states that you can change the number of turns between auto-saves. The base default is to auto-save every 1000 turns, and the helptext claims that it'll return to that default 1000 turn setting when pressing ENTER. Alternatively the number of turns between auto-saves can be manually set from 1-100, or disabled using 0.

First issue; if one save per 1000 turns is the default, surely it should be possible to manually set any value up to 1000? (For example, I'd prefer mine to save every 600-800 turns in play, good balance of protection vs speed.)
Secondly, and more importantly, the input values are actually set between 50-100 at present. Because the maximum input value is 100, pressing ENTER actually defaults the turns between auto-saves to *100* rather than 1000 as listed.
This is unfixable at present because there is no way to manually, or automatically, increase it back to the original default value. Even setting it to 0 (disabling auto-save) before pressing ENTER won't restore the original setting after it has been changed the first time.
In any case what this means is that if a player tries to change the auto-save frequency even once they're stuck with a permanently over-frequent autosave from that point on. It also means the helptext is inaccurate.