Graphical installer rearranges partition order

[schertt]

When manually laying out an install on standard partitions, I'm creating them in the following order:

1 - boot
2 - swap
3 - root

If you lay the partitions out in that order, the installer will accept them and honor your requested order. However, if you make any kind of changes to those partitions after that point, the installer automatically reorders those partitions, switching the order of the root and swap partitions:

1 - boot
2 - root
3 - swap

This may seem trivial but it's actually pretty consequential to me: the size of the root partition fluctuates and that's a PITA if it's not the last partition on the drive. I've noticed this has been the behavior for a while now and I have to be honest it's getting pretty old for me. Why does the installer do this and is there a way to prevent it from doing so?