But you still don’t. Even after change (which was very small) you don’t hit max level by doing main story AND side quests (no rested xp, no WM bonus). Doing JUST main story leaves you somewhere between lvl 57-58 and doing main story and all side quests leaves you to 59 and bit.
edit: to add, there is threads testing this in both EU and US forums, here is link to US one because it has more posts. On the end part you can see results from current build:
https://us.forums.blizzard.com/en/wow/t/not-enough-xp-while-leveling/619528