Collabora only partially loads a linked Zotero library

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The Basics

  • Nextcloud Server version (e.g., 29.x.x):
    • Nextcloud AIO v11.9.0
  • Operating system and version (e.g., Ubuntu 24.04):
    • Ubuntu 24.04.3 LTS
  • Web server and version (e.g, Apache 2.4.25):
    • replace me
  • Reverse proxy and version _(e.g. nginx 1.27.2)
    • replace me
  • PHP version (e.g, 8.3):
    • replace me
  • Is this the first time you’ve seen this error? (Yes / No):
    • No
  • When did this problem seem to first start?
    • This week (the first time I have tried)
  • Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
    • AIO
  • Are you using CloudfIare, mod_security, or similar? (Yes / No)
    • No

Summary of the issue you are facing:

I run Collabora Online Development Edition (25.04.5.2) locally.
I have added my Zotero API key and want to add citations to an open DOCX document. Clicking on References > Add citation brings up the Zotero citation selector as expected, but only a fraction of my library is loaded. Many subfolders are incorrectly shown as top-level folders and many more are just missing.

Citation support is crucial for real-world use of document editing in Nextcloud - I would love to properly transition my work. Can someone help me get this working (or can I help fix something)?

Steps to replicate it (hint: details matter!):

  1. From within an open ODT or DOCX document, select References > Add citation

  2. A pop-up box appears with a folder overview and search field.

  3. Folder overview is incomplete and many subfolders are also shown as top-level folders (with ‘expand’ arrows, although these disappear when clicked if the folder is actually bottom-level).

  4. Searching only finds a small subset of my large library.

  5. If the citation is found, it is added to the document (overwriting a previous citation if that was selected - updating appears not to be supported) but the bibliography is not updated (indeed - it seems not to be created at all).

Log entries

Nextcloud

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No log entries were generated when performing the above sequence of events.

Web Browser

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Web server / Reverse Proxy

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Configuration

Nextcloud

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Apps

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