I got a message from a player today (which I never met before) that my portal can be modified for a brief moment.
Created a new alt to try this out and it works as described. I did not give any rights to that new character.
Here is a short video:
What I do:
I activated the portal by looking at it. It is in my back at the beginning of the video.
In second 3 I walk through it.
Immediately after I press E and the portal settings come up. It closes automatically less than half a second later.
When pressing E again the notification comes that I have no rights.
The problem is now that when I position my mouse correctly and press a button while the settings are up I am able to modify the portal. It is possible to rotate the portal exit for example.
This can be retried as many times as wanted after every crossing.
Portal is at Dzassak 748N 1037E. PS Dzassak is directly next. Please do not try to close the portal as that may break the reproducibilty.