Sadly the answer is no. I know what causes the problem and have researched a number of solutions but so far cannot find one that works
It is a known problem well discussed on CKEditor’s help forums. There have been many suggested solutions but none that work in our case.
But I will continue to look.
One solution is to create your blog in simpl_pages (or FAQ or stories modules), then copy/paste the source code to the HTML block.