I made a short tutorial on how to fix probably the most annoying problem any tumblr user will ever encounter. <br /> <br />First, start with the image or gif you want to use. <br /> <br />Save it to your computer. <br /> <br />Then you're going to click the text post button to create a new post. <br /> <br />Once you've done that, click the image icon and add your file. <br /> <br />Now we're going to fetch our HTML code, (select all & cut). <br /> <br />Return to the original post you wish to reblog. Paste the code in the HTML editor. <br /> <br />SAVE. <br /> <br />Ta-da! No more annoying gray boxes on your dashboard.