[Bug] Adding block equation removes quote

[kevin8999]

Summary

When attempting to write a block equation inside a quote's last line, the editor removes the quote and adds the block equation in.

Steps to reproduce

1. Open the editor
2. Create a block by beginning a line with >
3. Add a block equation by typing $$ or clicking the f(x) Math button

Expected behavior

When a user inserts a math equation inside a quote block, the following markdown should appear:

> $$ {block equation here} $$

Actual behavior

Currently, when the user inserts a math equation, the quote block is overwritten with the block equation, resulting in:

$$ {block equation here} $$

Version / commit

main

Area

app (frontend)

Confirmations

• I searched existing issues and this is not a duplicate.
• This is not a security vulnerability.