Okay this is the weirdest thing I've ever seen happen in my life. We needed to add a rear toe kick notch and the next thing I know we have two chairs hanging out on the drawing. 

We actually can't even process this job, due to these things I assume. Has anyone ever seen this before? Or have any idea what the heck is going on?

Nothing at all looks out of place in the spreadsheet.

See attached video for good times.