Bug overview description.
The index (listing page) thumbnail for post #1257753 shows a much lower favorite count (currently 160) than on the post page itself (currently 551). The lower, inaccurate favorite count is used when searching with order:favcount.
What part(s) of the site page(s) are affected?
/post/index/ thumbnails, /post/show/1257753, "Recent Uploads"/"Recent Favorites" on relevant user pages
What is the expected behavior?
Index page shows same number of favorites on post thumbnail as on the post page itself.
What actual behavior is given instead?
Index page shows lower favorite count on post thumbnail than on the post page itself. The thumbnail value is used in index searches.
Time of incident (if applicable).
Newer version uploaded June 26, 2017 02:23 UTC.
Can you reproduce the bug every time?
So far, I have only seen this happen with this image. At time of writing, favcount discrepancy remains.
What steps did you take to replicate this bug?
I uploaded post #1257753. Another user flagged post #567139 for deletion. The older post was deleted, and its favorites presumably transferred to the newer post.
Errors or other messages returned (if any).
N/A

It's one of the Tumblr raw replacements. Looks like something went wrong in the transfer process.

Click here to see the lower count.

Thank you for the report. I will look into it.