minor-Bug: Sort using Ascending

When using ascending you can ascend on specified field. (my field called Nr).
The numbers normaly go from 1 to around 20. (1,2,3,4,etc)

Now i had to add a few things between it so i used 1.1 & 2.1
So it should show 1, 1.1 , 2 , 2.1 , 3 , 4 , etc
Since 1.1 is highter then 1 and 2.1 is higher then 2…

But when loading it it shows in the next order.
1.1 , 1 , 2.1 , 2 , 3 , 4 , etc

Is there anyway to fix this on the wix end?

I can start numbering them like 10,20,30,40, etc so when i have to add a new item its easyer to add a new item between it.
But in my opinion 1.1 is still higher then 1 so that should also work right?

Kind regards,

Kristof.