Bug overview description.
@Chessax: Bug: Tag list on post page shows aliased tag instead of proper tag in certain condition.
Expected behavior: Proper tag shown
Actual behavior: Aliased tag shown
Steps to duplicate: Not exactly sure how this happened as it was a while ago, but something similar to (with alias of the form alias → proper):

Adding a new aliased tag to post
Undoing the tag change (though tag history)
Post will have the original aliased tag instead of proper aliased

What part(s) of the site page(s) are affected?
Tag History

What is the expected behavior?
Target tag in an aliased tag should be shown.

What actual behavior is given instead?
Previous tag in an aliased tag is shown.

Time of incident. (If applicable)
N/A

Can you reproduce the bug every time?
Yes

What steps did you take to replicated this bug?
N/A

Errors or other messages returned. (If any)
N/A