I feel a disturbance in the fields, as if some portal data were not right

I feel a disturbance in the fields, as if some portal data were not right

I think I spotted a funny glitch in #ingress . On the image you can see the Lotus Pond in Gaoxiong, Taiwan. The green portal is the Dragon-and-Tiger-Tower. Exactly a week ago I happened to come across this portal right after agent POSIN had taken it from the resistance, so I added a few resonators.

The same evening it was taken back, a few days later I took it back and then the resistance took it back and it was blue again. Until this morning.

Comm says an agent by the handle of "Attack" destroyed a link that had been there. The link is indeed gone. And the portal is green again, equipped with the resonators from - no, not Attack, from both POSIN and me - from a week ago.

Now what kind of anomaly is this?