Bug overview description.
Tags will often display a negative number for the amount of posts with said tag, even if said tag is not aliased and is being used in active, approved posts. Wiki pages will also not display posts, even though the actual post listing will.
What part(s) of the site page(s) are affected?
Posts, tag listings, search pages, wiki pages.
What is the expected behavior?
Tags like fur_trim will display an accurate count (9+), and will have posts appear on said tag's wiki page.
What actual behavior is given instead?
Tag counts are often wildly inaccurate (-27), and posts will not display on the wiki even if they are otherwise viewable.
Can you reproduce the bug every time?
Bug is not the result of user actions.
What steps did you take to replicate this bug?
Bug is not the result of user actions.

I believe that has something to do with deleted posts attributing to tag counts

fur_trim hasn't been tagged on any deleted posts. Conversely, all 9 posts that have been tagged with alexandra(alexaxp) have been deleted, but the tag count is still 9.

https://youtu.be/RY_2gElt3SA

fur_trim and alexandra(alexaxp)'s post counts have been corrected, but there are still many tags with incorrect counts. Some are aliased away to properly counted tags (pointy_ears, stated: -2186, actual: 0), some are just currently unused (flannery, stated: -14, actual: 0), and some are even sparsely used (cleaver, stated: -11, actual: 3).