Favorited worlds show the photo and name of a favorited world that is unavailable (DMCA'd)
WubTheCaptain
On the website, a world which has been subject to a copyright takedown notice under DMCA still appears with full details in "Favorite Worlds". These worlds can also be moved to different favorite world lists.
In the Steam client, these worlds appear as "World Unavailable" and can only be removed from favorites.
Affected world: ＜＞＜ AVATARS (
wrld_0d53684b-48b2-48d8-9e68-c49244ccbf61
) by TheZiver - note you can't normally access this world's information in a browser.It's unclear to me what the expected behavior is here. Attempting to view the HTML source of the URL above does not leak metadata - such as the picture or world name - from meta tags, and the unavailability of information page in browser suggests to me this is information is meant to be private and not visible in the "Favorite Worlds" list.
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WubTheCaptain
Additional detail: Worlds which have been deleted or set private by its author are not displaying world details such as names or photos, so this discrepancy in OP only affects DMCA'd worlds. (Deleted and privated worlds appear as paraphrased "World Is Unavailable" or "World Is Set to Private", the same as in the Steam client.)
Oddly enough, trying to move these deleted or privated worlds from the website deletes the worlds from the favorited worlds lists entirely without warning!