Harvest in Mirage has no exit

It's just a Harvest in a Mirage area with Oasis grounds in a tier 14 map. And after clearing the harvest I realized there is no exit. But the teleport back Button still worked.
Also after leaving the harvest with the teleport button and reenter it, there is still no portal. And also after leaving the mirage and reentering the harvest there is still no portal.

What I did:
- enter T14 Burial Chambers
- enter harvest in Mirage map
- clear harvest

What happened:
- no exit portal from the harvest

Here is an image if that helps: https://ibb.co/xtzxMYt6