Publications disappear when multilingual support is added

[JVAQUEROM]

Description of the bug

I have made a website with Academic hugo theme, with two languages (english and spanish). If I put the publications section only in the content/publication/ folder. However, when I copy it to content/es/publication, some publications disappear. Which publications disappear seems pretty random. The index.xml file seems to not have all the publications, although they are in the public/ folder. Notice this is happening with R blogdown package, although I don't think it is related to that.

To Reproduce

Steps to reproduce the behavior:

1. Create a few publications (in my case, some of the have the same first author and year, a total of ~8).
2. Build the site.
3. See that all the publications are there.
4. Copy the publications to the Spanish version of the web (content/es/publication). content/es/publication/_index.md is adaptaded to spanish
5. Build the website.
6. Click in "Quickly discover relevant content by filtering publications. "
7. You will only find that some of the publications, not all (4-5 out of the 8).

Expected behavior

One would expect all the publications to appear.

Technical details:

• Academic Version: 1.0.0 (accoding to package.json file)
• Hugo Version: 0.74.3
• Browser/OS: Firefox in GNU/Linux (but I guess it happens in any browser).

[gcushen]

If publications are disappearing, then the issue is likely related to Blogdown or Hugo. Wowchemy/Academic relies on Hugo to generate the files. Blogdown wraps Hugo, so any issue in Blogdown can be propagated down. Consider raising the issue there.