Joomla 4 - Article Default Editor and SP Page Builder Button Issue

I am using Joomla 4 latest version, SP Page Builder 3.8.8
I am having issue for joomla article editing, here is the steps to duplicate:

1. Create new joomla article
2. default editor is Joomla Editor
3. Enter some text into this joomla Editor
4. Now Click on SP Page Builder button next to Joomla Editor button/tab
5. Then switch back to Joomla Editor
6. The content text is gone or cleared? no where to enter text.....