Textnode with content "null" is rendered as "null" not whitespace

@joukhar npm install GrapesJS/grapesjs#dev is not enough, I didn't create the build in the dev branch yet, so if you want the fix locally you have to build it yourself first. Anyway, there is no need to create new issue even if the related one is closed, you can still add your updates there, the is...

Thank you for reporting this issue and providing detailed insights into the relevant code sections. You've correctly identified the root cause of the problem. Root Cause Analysis: The issue stems from how JavaScript's textContent property and document.createComment method handle null or undefined v...