I've experienced an occasional problem with code. For example, I've cut and pasted Amazon.com link code into a post in case someone wants to buy a book I'm talking about. Then I save or publish the post, and the code changes subtely, so the link doesn't work as it should.
It also happens when I embed YouTube code into a post. It always works fine the first time I post, but when I edit the post to fix a misspelling or some punctuation, the code--which I haven't touched or even come close to touching--changes, so the video disappears and all that is left is the empty space with the video was and one of those little "x's" in the upper left hand corner.
Any idea how to solve this ongoing problem?