After Ascending Tayrel The Stern the first time his Hitpoint reduced by approximately 3000. Screen shot attached of LVL 17 Tayrel with 900 Hitpoints ascended once.
Спасибо за совет относительно альтернативного решения проблемы. Если вы не против переведу его на английский.The player MOOO has found a workaround. You can ascend the hero to 3 stars and the HP stats will go back to normal.