This just started happening to me yesterday. I connected my older laptop and everything behaves as it should. I uninstalled and reinstalled HX Edit 3.82 (Helix Floor is at 3.80) and the issue is still present on my newer laptop. So this is an issue only occurring on my fairly new (~3 month old) Lenovo Legion 5 slim Windows 11 laptop. Reordering worked fine on this newer laptop until yesterday. I don't think I changed anything, but I guess it's possible I did...