Bug in frontend when pasting markdown

[amerkay]

Bug Description

I love the notes feature, but it does not work well when pasting markdown (eg. ChatGPT output). It partially pastes, then cuts off.

This happens on v1.1.1 and v1.2.1.

To replicate issue, try pasting this example MD into a new note:

## 💻 Git Commands That Sound Smarter Than They Are

- `git init`  
  > Birth of a future problem.
- `git stash pop`  
  > *Surprise! Here's the mess you tried to forget.*
- `git checkout -b feature/sanity`  
  > A branch name full of hope and lies.

Notice that it cuts off after the first bullet point. Also, the block quote add a return.

Expected behavior

It must always paste the full text, and not cut off with no warning or error message, at least.

Technical inputs

No error toast, or anything on console.

[FelixMalfait]

Thanks for the report!

I just tried it on https://www.blocknotejs.org/ which is the upstream dependency allowing this and it seems they've got this problem too, so it might not be easy to solve (need to patch their lib or do a fix their directly).

[amerkay]

Oh, I didn't think to check blocknotejs - I just reported bug there, too.

[FelixMalfait]

Oh great thank you @amerkay

[ehconitin]

Quick update - been chatting with the BlockNote maintainer (@matthewlipski) and he found the root cause. The markdown-to-HTML conversion creates nested blockquotes in list items, which breaks their parser.

There's a temp fix in the works: TypeCellOS/BlockNote#1930

Not perfect (quotes get flattened into list items), but should stop the cut-off issue. He mentioned they're aiming to get this merged for the next release

[Hector-Zhuang]

I've created a PR for this, so the solution is pretty simple. The markdown is converted to HTML and then converted to ProseMirror nodes

TypeCellOS/BlockNote#1957

[FelixMalfait]

Thank you @Hector-Zhuang!