Sorting Bug

My list of subfolders is not sorted correctly

It show a list of my subfolders as :

4.907

4.908

4.9100

4.9102

4.90801 <-- this one should be between 4.908 and 4.9100

Here is a screen shot:

cid:image001.png_at_01C85E55.ECA35F60

I created a folder named "4.90802" after I created the "4.9102" folder to
see where it put it. It is listed after "4.90801".

Otherwise the folders were created in numerical order.

Thanks, You guys are doing a great job!!

Matthew