Purity said:
I was -8000/4000
At level 16. I had to get the 8000 to get to 0. And from there get to 4k to lvl up. I'm sorry but that's 8k extra exp that I had to gain to lvl up.
I don't think that's because of a visual error.
Two things cause negative exp.
1: You had a pokemon that was around during the exp system change
2: You evolved a pokemon.
The formula is based on the Base Exp gain of a pokemon. For example, pidgey has a base exp of 50. It's evolution has the base exp of 113.
Let's pretend that for Pidgey it takes 200 exp until it reaches level 16 (the level it evolves in PWO). For Pidgeotto to ever reach that level, it would take theoretically 400 exp.
You evolve Pidgey at level 16 after grinding up 200 exp. You evolve it into pidgeotto, which needs
400 exp to be on that same level. Thus you have a debt of 200 exp when you evolve into pidgeotto. THIS is where the visual error happens.
Instead of, when evolving, changing the exp to show "0/400," it instead adds the debt to the wrong side of the bar. So instead, you see "-200/200" instead of "0/400," as stank said. =P
Now, what happened to pokemon that were around BEFORE the exp change, it simply takes more exp to level to 100 now. Because of that, the exp they had made them go down levels and get negative exp.
So even if this was "fixed" you'd have to train the same amount; you just likely wouldn't notice.