Total Commander

see attachment pic.

environment:xp tc8.51a
also test in xp tc 9beta4
suggest use the same rule of sort
Image: http://v2.freep.cn/3tb_160713125423un8f512293.png
Image: http://v2.freep.cn/3tb_160713125445avqs512293.png
Image: http://v1.freep.cn/3tb_1607131255131tq4512293.png

It's because of the extra dots. One method separates names and extensions, then first sorts by names, then, if they are equal, by extensions. Other method just sorts by the entire name.

I see,maybe use the same way is better.