Hero leveling special skill improvment

I have Seshat, hero of the month. I was leveling her and ascended once and she is 40th level second ascend but she has her special skill 2/8 it did not improved once for all that time and every leveling is done with 10 dark heroes at once everu training had about 30% chance for improvment and after 15-20 trainings it did not improved once I think it is a bug please look into it. Thank you for your time.

A post was merged into an existing topic: Special Skills not levelling up