Thanks to open source! After spending a few days, I modified my own fork and now the order automatically restores every time Explorer crashes or when I restart 7+. My code is not perfect. But I am very happy when it is working. However, I'm not sure what to do when I eventually have to upgrade to Windows 11 one day. Haha
https://github.com/fmnijk/7-Taskbar-Tweaker

Is there any update on this issue?