Can’t find Corrupted Nexuses

A similar issue is back :(

I was doing the first Corrupted Nexus map. Did all the Rares and headed to the boss.
I was able to beat the boss and then he dropped all his loot. After that the corrupted boss spawned. He was a little dicey and ended up killing me.

So I respawned and finished off the corrupted boss on the second try.

When I go to the atlas map to find out What the hell happened, It shows that the area is cleansed but the quest to complete the corrupted Nexus tier map is still not done. I traversed a significant portion of the map, but couldn’t find any more corrupted nexuses.

Please help with the bug? Anyone else have this happen to them?

TBH, it’s super frustrating. BTW, I got atlas points, but quest is stuck at complete 3+ corrupted nexuses and no corruption whatsoever anywhere. GGG, please help with this.