Vandalism in the image gallery , or is it technical glitch/revert?

On the IMDb page for this title (https://www.imdb.com/title/tt10505918/mediaindex/), all the recently uploaded BTS images and posters were deleted, and two AI-generated fan art posters (since deleted) were re-uploaded in their place. This is reminiscent of the vandalism that occurred in the gallery for the first part of this movie several months ago, suggesting that this entry might be experiencing similar interference. However, something seems particularly unusual. If someone had vandalized the page and re-uploaded the AI-generated posters (https://www.imdb.com/title/tt10505918/mediaviewer/rm2362266625/ and imdb.com/title/tt10505918/mediaviewer/rm2412598273/), these images should ideally appear after the existing poster in the upload order. Yet, they’ve returned to their exact original positions prior to being deleted. How is that possible? Could this be a technical glitch?

Alternatively, it raises the possibility of a systematic rollback, reverting all recent contributions to a previous state. What exactly is happening here? Could someone please investigate? Additionally, please review the gallery logs to check if new uploads are consistently being removed by any disruptive user. Because, the images newly uploaded were released months ago, so it’s possible that they had already been uploaded by another user previously.