Footnotes repeating

I just ran across a very similar issue on the 4.x branch of the module. The patch seems to work on the 4.x branch as well.

Thanks for flagging this, will try to get to reviewing this issue in the next few weeks. For now marking as needs work as it has a patch but I think we agree it is a bandage solution rather than solving the issue.

It would be helpful to know:

1. Which other filters are enabled in the text format and their order
2. Which settings within the filter plugin are enabled within the text format
3. Which block configuration is being used (if any)

To make it easier to reproduce.

Thanks!

In our case, it only happens when using the twig tweak block to group all of the footnotes. It happens regardless of using the js group option or not. It doesn't happen when we don't use the grouping option. Here is a list of the filters we're using

Filter processing order
Linkit URL converter
Limit allowed HTML tags and correct faulty HTML
Footnotes filter
Responsive wrappers filter
Align images
Caption images
Restrict images to this site
Track images uploaded via a Text Editor
Lazy load images
No Non-breaking Space Filter
Replaces global and entity tokens with their values
Display embedded entities
Embed media

Hmmm not able to reproduce in the 4x branch sorry - I am trying with clean install, enabled a series of filters, used paragraphs, added multiple footnotes within each paragraph, nothing repeated.

I think I just found a way to replicate the bug. Here are the steps:

1. Install Drupal 10.1 latest
2. Install metatag module
3. Enable footnotes in CKE 5 (Set to collapse duplicates and set block rendering)
4. Set the Footnotes group block in the content region
5. Create the metatag field for the basic page content type
6. Create a new page with some content in the body field and leave the summary empty (Have the summary be generated for you)
7. Add some footnotes to the body field and save the page
8. The duplicates should appear

I'm not sure if there is anything you can do about it but I figured I would let you know in case you want to look into it. Some workarounds include manually setting the summary or setting the description to use another token other than [node:summary] which is the default.

Thanks @cmconklin, that makes sense - so essentially if the citations are displayed twice in the main content of the page, the references & backlinks are then also displayed twice and the grouping of duplicates is not kicking in. The displaying twice happens when the text format has a summary and the citations appear in the summary. And just to confirm, we are still talking about the 3x branch correct? I am not contributing to the 3x branch myself, but hopefully someone can help step in to help here.

Updated issue summary

Sorry for the confusion, this is on the 4.x branch. The original issue was created on 3.x but this issue that I am experiencing is on the 4.x branch. I wasn't sure if a new issue should be created or if the version on this issue should be updated.

Actually, I'm going to create a new issue, just in case @emanaton's is a separate issue

Moved to #3440429: Duplicate footnotes when using footnote summary in metatag