After converting the block content from paragraph to heading during composition on iPhone, the editor will not respond to subsequent input

[clumsyme]

Device: iPhone 11 Pro
OS: iOS 16.1.2
keyboard: Simplified Chinese Pinyin
Steps to reproduce：

• go to prosemirror.net, create a new paragraph in editor
• type in some text
• change the paragraph to heading while in composition

video:

prosemirror.mp4