Sort tasks by Outline Number

Sorting tasks by Outline Number is not really sorting correctly. It is sorting alphabetically not numerically. So when sorted I’m seeing:
Outline Number
1
10
10.1
10.10
10.2
10.3
2
3
4
4.10
4.11
4.2
etc…

Not really appropriate sort sequence for WBS numbers
Should be
1
2
3
4
4.1
4.2
4.3

4.10
4.11
4.11.1

10
10.1
10.1.1
10.2
etc…

Can the sorting of this column be corrected to use the number ordinals correctly?

Thanks for reporting. I submitted a new bug report to the issue tracker: