I see that support popped in to my site and did some testing, but I don’t see any resolution. Here is what I have done, in the Theme Customization, under the Static Front Page section, I have removed the posts page. Essentially, I set the drop down to the — or unselected. This makes the blog page editable again. I won’t be using breadcrumbs so it doesn’t matter, but clearly there is a problem here for you to look in to for future releases.
