As described in https://github.com/quarto-dev/quarto/pull/798 by @juliasilge: > [..] an immediate noticeable difference I am seeing is that R packages show up in the visual editor but not the source editor: > > <img width="389" height="260" alt="Screenshot 2025-08-26 at 8 50 51 AM" src="https://github.com/user-attachments/assets/6eaf66f4-a744-4e45-92aa-8167ca2511b5" /> > > It's the bslib and jquerylib entries there. Please see that linked pull request for more context for now.