text-editor deletes image embeds — and the table cell or paragraph around them — when saving Markdown #3434

Initial Checklist

• I understand this is a bug report and questions should be posted in the Discussions
• I searched the issues and discussions of opencloud-eu/web, opencloud-eu/opencloud and opencloud-eu/web-extensions and found nothing about this

Bug Description

Saving a Markdown file in the text editor deletes every image embed (![](…)) that does not stand alone in its own paragraph. The image files stay untouched, but the node around the embed is deleted too:

• an embed in a table cell deletes the whole cell, so the following cells shift one column to the left
• an embed next to text in a paragraph or list item deletes the whole paragraph, text included

There is no warning. In our instance this would affect 94 of 311 notes with images; 54 of them would also lose text.

Reproduction Steps

1. Upload this file as test.md:

   | Image | Name |
   |---|---|
   | ![](a.png) | Alpha |
   | ![](b.png) | Beta |
   
   Some text ![](c.png) more text.
   
   - Looks like this:![](d.png)
   
   ![](e.png)

2. Open it in the text editor, change any word, save.

Expected Outcome

All embeds, cells and text are kept.

Actual Outcome

| Image | Name |
| ----- | ---- |
| Alpha |      |
| Beta  |      |


![](e.png)

Only the standalone embed e.png survives.

Cause

• @tiptap/extension-paragraph turns a paragraph that holds only an image into a bare image node. All other images stay inline inside a paragraph, and table cells always wrap their content in one.
• The markdown strategy configures images as block nodes (inline: false), so an image inside a paragraph is invalid.
• The Yjs binding cannot build the invalid paragraph and deletes it (createNodeFromYElement). This also happens in local mode without a Yjs server. Without Yjs, the embeds survive.

inline: true alone is not enough: a lone image inside a blockquote then deletes the blockquote. What worked in our tests was inline: true plus a paragraph extension that does not unwrap a lone image. With both changes, all 1,308 embeds in our notes survive a round trip.

Setup

OpenCloud 8.0.1 (Web 8.0.0), no Yjs server configured. We tested the table case in the browser and reproduced the other cases headless with Tiptap 3.31.3 and @tiptap/y-tiptap 3.0.9. The script is available on request.

Related: #2600, opencloud-eu/opencloud#3414