Sumatra PDF is a PDF, ePub, MOBI, CHM, XPS, DjVu, CBZ, CBR reader for Windows

CBR/CBZ Comic reader

The reader sort the page not in numeric mode. The result is a1 a10 a11 a12 a13 a14 … a19 a100 … and not a1 a2 a3 … a10 a11 a12 … a99 a100 …
I love you.

Natural order sorting rather than alpha order (a1 a10 a11) was an older issue fixed more than once in 2018 so should have been working in version 3.2.

so I have to ask which version you are using ?