Describe the Issue: Im tamed lv 49 Rare Elite https://www.wowhead.com/classic/npc=5349/arash-ethis

Those pet have level 5 Lighting Breath skill. Because im selected wrong skills im decide unlearn my pet skills. After this not allow me learn again Lighting Breath skill lv 5 so im went all npc and learn all skill level 1-5 Ligthing Breath. But not working my clean reseted skilled pet only lv 1 and lv 3 can learn all other write ability cannot use my pet. 

How to reproduce: Im went pet trainer in Darnassus unlearn my skills after this comeing the problem.

How is it supposed to work: https://www.wowhead.com/classic/pet=27/wind-serpent#comments

Need training points for train pets after u learned correct level skill from selected NPCs.

Pic from pet training: https://ibb.co/zh5vnVs

Character the bug occurred on: Nucian