Attempting to access (at least) the revisions route for a post with a revision involving the
[tag:*] syntax causes an error:
Found it, fix has been deployed.
There was a bit of confusion around loading tag data*, basically trying to get the "required", "mod only", and "sponsored" tags for
api.stackexchange.com... which doesn't end well.
*Data necessary for rendering revisions that have the
[tag:name] markdown extensions.