Some Posts Won’t Index

I’m having trouble fully indexing my site. Relevanssi will index all but about 57 of my various posts, pages, and custom post types (out of ~ 16,000).

It silently fails at the index giving no errors. The one of those 57 entries that I have found has no index data whatsoever (as found on the debugging page). No errors or any other info. I can get information from relevanssi_index_doc, but don’t see anything that screams of an error. I also haven’t been able to nail down anything different about this post or why it’s not in the index. (It is from a custom post type, but others from the custom post type have been indexed without issue)

There are no PHP errors, or any other type of errors I can find. Query Monitor only shows one query on the indexing page.

When I try to re-index the site it tries to index 367 entries instead of just the 57, giving output like this:

Counting posts… 57 posts found.
Indexed 10 posts (total 10), processed 10 / 57.
Indexed 20 posts (total 30), processed 30 / 57.
Indexed 25 posts (total 55), processed 55 / 57.
Indexed 30 posts (total 85), processed 85 / 57.
Indexed 35 posts (total 120), processed 120 / 57.
Indexed 40 posts (total 160), processed 160 / 57.
Indexed 45 posts (total 205), processed 205 / 57.
Indexed 50 posts (total 255), processed 255 / 57.
Indexed 55 posts (total 310), processed 310 / 57.
Indexed 57 posts (total 367), processed 57 / 57.
Indexing complete. -310 posts excluded.

I initially had an issue with a custom shortcode that caused problems with indexing (95% wouldn’t index), but I solved that. I also tried not expanding shortcodes when indexing, but that didn’t change the output behavior.

I have no problems completing the index on my local copy of the machine. Production is the only place this is happening… of course…