I have an issue that's been annoying the crap out of me and I haven't been able to find a solution. I'm hoping someone here can help me out. I want to drag an image from one tab into the upload field in another tab. This works fine in other browsers, but not in Firefox. For example, I'm posting an item on Craigslist. I have pictures on the item in Google Photos. I would like to drag the image from the tab showing Google Photos to the upload field in my Craigslist post, but when I do, nothing happens. I get the same behavior regardless of what web page I'm dragging the image from or what website I'm trying to upload to.