Sorting of UNGROUPED PROJECTS by Project Number

Sorting of UNGROUPED PROJECTS by Project Number

Hello,

Is there a way to improve the sorting of data based on the selected field.  In my case, I want to sort by the "Project Number" (this is a custom number field created).  As seen on Figure A, this is sorted, but when I go further down, on Figure B, other projects is not sorted, whereas, it should be sorted by all the projects.

Figure A



Figure B