I’m about to tell you the saddest story known to M'er F'ing man. It’s that I think Tumblr changed something about how the dashboard does images. I personally use the click-to-enlarge model of viewing images on the dashboard because porn (excuse me, artistic nudes of skinny white women people the #menswear blogs post), so I haven’t ‘tested’ this under the standard configuration.
My complaint is that there’s not enough room between an image and the text (top) and that many, many previously un-text-breaking photos now break text.
So - yeah. Tumblr keeps on like doing stuff I guess. Good for them. (Bad for us?)