Yes, you are correct. This is more so to point out how odd it is that there is no quest or asking from the druids to recover it. How odd it is that after everything that's happened involving the idol, that the grove Druids would do nothing to to even attempt to recover said idol. It feels like there is a big step missing with the Idol of Sylvanus quest.
The thread is more to point out how odd it is that there is no recognition in-game that you returned the idol to its proper place, or that there is no option to speak to any of the Druids about it. It's weird enough they aren't asking you to help them find it, but you should at least be able to talk to them about it being back on its pedestal. At the very least the Journal entry should reflect that.
If the player chooses to return it, the game should be able to acknowledge that.
Perhaps I should rename the thread, eliminate the word bug, and replace it with "missing option" or something like that?
I would be interested to know what other people think about the Idol thing. Do you think the game should recognize that you returned the idol in the end? Or should the journal ignore that you returned it?