Bug: Saving Images on blog posts not working correct

I am trying to save a new image on a blog post within the blog content section of custom properties, however it is not allowing me to save the change. When I click save I am getting the following pop up message which is an endless loop to saving the image. This also seems to be happening when trying to save edits on text on the blog. Any ideas what is going on or is this a known bug?

Hi @JFK.
I am unable to reproduce this problem. Please provide a link to the site and video.