Random box appearing around the paragraph I'm currently editing.

I have a Word doc that I've downloaded from Google docs and as I move my mouse around, it wants to highlight the entire paragraph that the mouse is hovering over, and once I click where I want to type, a box appears, but just around the paragraph I'm currently in. I've downloaded from Google Docs before, but this is the first time this random box appears. This box does not appear around any document that has only ever been in Word, but this document below was started in Word, uploaded to Google Docs, and then re-downloaded back into Word.

I've even tried to copy and paste this entire document into a new doc and the same thing happens when I keep source formatting or when I merge formatting, but when I choose the "text only" option, it disappears. 

This is not the same as the other "box appears around text" posts that I've seen before. I managed to make it go away once, but I have no idea how to make it go away again. I don't think it affects the formatting or my ability to edit the document, but I've never seen it before so I don't really know what it does. 

If I click on that little menu looking tab on the top left, it just highlights the entire box, and right clicking on the tab does absolutely nothing. 

For those of you wondering I've gone into File --> Options --> Advanced and the "Show text boundaries" is already unchecked. I've restarted my computer and checked again with the same thing. 

Posted an example of what I see below. Anybody know what this is?

Last thought, this happens in both Word 2016 and Word 2010 since I have Word 2010 at work and Word 2016 at home.