Bug Description

Streamed markdown can animate multiple sections at once.

For example, while a list is still animating in, the next paragraph or heading can already start animating too. The content order is correct, but the visual reveal feels wrong because multiple sections are “live” at the same time.

Steps to Reproduce

1. Stream structured markdown with multiple sections, for example:

• a paragraph
• a short intro line
• a bullet list
• a closing paragraph

2. Watch the response while it is still streaming.
3. Notice that the next paragraph or heading begins animating before the earlier list or section has visually finished.

Expected Behavior

The list finishes animating before the next paragraph

Actual Behavior

Code Sample

Streamdown Version

2.5.0

React Version

19.2.2

Node.js Version

No response

Browser(s)

No response

Operating System

None

Additional Context

No response