HTML Block Overwrote Adjacent Content Block
PermalinkStrange glitch today editing one of my sites. Adding an HTML block for an advertising banner in the left sidebar apparently has covered the existing content block. Both show up on the page but I have lost the ability to edit the content block. Very Strange! See the screen shot attached showing edit mode of the page in question and you'll find the advertising block border surrounds the content block.
Anyone else have this issue? Not a major problem at this time but I'll need to delete it all and start from scratch if I want to edit this content block.
Thanks.

I'll be sure to preview the code before copy/pasting next time :)