Zombie Hp 23000 Stuck

Hello everyone.

I have a lvl 66 gem, raise zombies, which I increased the quantity to lvl 20, it shows that my minions have more hp under the gem, but in the skill icon it's still 23550.

I wanted to ask if the support tooltips are bad, or minion hp has a cap?

Tooltips are bad, minion hp does not have a cap.