In 1.20.5 Pre-Release 3, certain simulation distance values cannot be saved. This is purely visual as if you open options.txt, you will see the correct value. This does not happen in 1.20.5 Pre-Release 2.
Affected values:
10 12 15 16 19 22 24 25 27 30
Steps to Reproduce:
Enter the "Video Settings" menu.
Set simulation distance to a value mentioned above.
Exit the menu.
Reenter the menu.
Observed Results:
These simulation distance values cannot be saved visually.
Expected Results:
These simulation distance values can be saved.
I hope this bug gets fixed soon. I'm running a server that I'm planning to update to 1.21 as soon as it is released. It has a tunnelbore that is very well measured on the edge of my simulation distance (12 chunks).