I’ve never had this issue in two years of playing. Not only did she never level up her skill during normal leveling plus 20% each time. Twice now I’ve tried to level her after fully ascended at 80% and nothing. That’s a lot of wasted exp
You know it Must be at 100%, other wise nada.
I found most 3s need to be hand fed after they’re maxed, not so with 4s.
Remember 100%, or nothing.(5×2*/10×1*)
Have fun on the beaches of Atlantis.