When converting the html of the li tag, the newline character is lost

[lansemei]

Describe the bug
A clear and concise description of what the bug is.

HTML Input

<ol>
                    <li>第1.1.1行第2次按tab</li>
                    <li>第1.1.2行第2次按tab</li>
                </ol>

Generated Markdown

第1.1.1行第2次按tab第1.1.2行第2次按tab

Expected Markdown

第1.1.1行第2次按tab
第1.1.2行第2次按tab

Additional context
When converting the html of the li tag, the newline character is lost. Even if you forcefully add\ n, it will be lost when converting again

[JohannesKaufmann]

@lansemei can you check the "HTML Input" in your Github Comment? Unfortunately I cannot reproduce this bug