Perfect Hydra Spectre not reviving in hideout after death

Same here, my spectres die a lot to pinnacle bosses, and iam tired of keep rebuying them, while listening other people how they "ALWAYS" revive when you enter new instance or hideout, yeah.... they don't.. consistently.

Google translated:
I've actually tested it on the Perfect Forest Warrior, Perfect Hydra, and Perfect Pain Artist. I've bought new ones many times (dozens) and it's always the same. But there's a catch. I had a maximum of two ghosts in the pool, and the Pain Artist always died and disappeared, while the Forest Warrior always remained. Then I applied a node to +1 ghosts, and there were three in the pool. I added a Hydra, and now it always disappears, while the other two remain, but if they are killed, they also disappear. Corpses don't appear in the hideout (only if you pull the stone while the ghosts are alive), and they don't follow you as lights; they simply disappear, as before. I haven't found any mention in the patches of ritual ghosts being single-use again, so it's clearly a glitch.

I have about 10,000 hours of experience playing minions, by the way. So, all sorts of nuances like +leveling minions on a stick, changing weapons, etc. I take this into account, but this build doesn't have that (wardloop).

Same trouble with hydra(

This happens to any spectres. Not just hydra