Proper sorting by level

[Marazota]

guys there is an addon Crafting Material Level Display
where you can sort by level

its possible to sort by level without this issue when lvl 1 items dont come first?
right now sorting order is:
2
3
4
5
6
7
8
10
1
11

Author of addon said its base game issue right?

Could not fix the sorting and the game will always reposition items with the same level each time you do something in the inventory list, so one would need to sort it by level + name, which isn't working within this addon as it breaks the vanilla game name sorting then.