Harvest Boss (Janaar, the Omen) Phase transitions broken

Upon starting the Harvest everything is fine. Janaar spawns and can be damaged.
Upon reaching ~60% life Janaar becomes immune to damage and will continue regular attack loop.

Only way to transition boss is to leave the Harvest (by either dying or leaving through the portal).

After reentering the harvest Janaar will have transitioned into the "planted" phase Janaar can now be damaged but will become immune to damage again after reaching the next life threshold, Janaar will keep endlessly spawning monsters.

Again leave Harvest and reenter to progress into next phase (by dying or leaving through portal).

In the last phase he can be killed as normal. Loot and harvest progress seem to work fine.

I encountered a similar problem with the same mob. Except leaving and rejoining did not transition the boss fight. It seems that I am stuck in an invulnerability phase and am completely unable to kill the boss. HP did not change at all.

Second and third screenshot are from a stream, which is why the quality is so bad.
https://imgur.com/nVttlaY
https://imgur.com/wlwTYM6
https://imgur.com/oYEwzg2

Bug report reference: 1.022.298.578

Also having the same problem. No way to get the boss to become vulnerable to damage again.

Plus 1 here @*$*)@*&#)@ very frustrating!!!!!!!
Gave up after more than 20min fighting....

Can confirm just happened to me too.

Also happened to me. He gets stuck at 50% HP and endlessly spawns mobs. I can take hit ES away, but he takes no damage after that.

Also, dying had no effect and didn't progress the phase

I have the same issue

Bug #3,831,299,053

Happened to me as well. 20+ minutes of fighting endless rare mobs. Just had to give up and lose the garden.

Just replying to confirm that I have had this issue as well, with infinite rare spawns and Janaar just standing invuln indefinitely.

people claim they uses 45 minutes......i guess you can kill it, just take very long time to end for add phase due to possible bug



edit:

link: https://www.pathofexile.com/forum/view-thread/3020920

It is another T4 Seed boss BTW