Saving a new page/post/block in an unlaunched site causes an editor crash

[roo2]

Gif

Error
DOMException: Failed to execute 'removeChild' on 'Node': The node to be removed is not a child of this node.

Steps to reproduce

• Create a new site incognito, new user via wp.com/new
• Exit the editor to Calypso
• Go to posts screen in Calypso
• Click Add new post
• Click Save
• Click Publish in the Publish Sidebar that appears after save
• See screenshot above

What I expected

Save the page

What happened instead

Editor crash with Error

DOMException: Failed to execute 'removeChild' on 'Node': The node to be removed is not a child of this node.

Reported by @ianstewart
p1590010363301400-slack-gutenboarding

[roo2]

This seems to still be happening on wordpress.com even after the fix was merged.

[ianstewart]

This seems to still be happening on wordpress.com even after the fix was merged.

Just dropping a note to say that 10 hours later (post-fix) it's working as expected for me now.