At the end of the witches sisters quest, they give you the compass that they talked about at first, but the last thing it says it that she gives you the telescope you asked about.

And then on the next turn, I traveled to the witch's hut, found out I had to travel to her sister's hut, and on the next turn the old hut disappeared, leaving the revived land, and the new witch's hut appeared elsewhere, similarly creating revived land and showing it as my area of influence.

Can confirm that is happens to me as well, but this also occurs with all other placed quest locations such as a village.

I get exact same situation.