I did that on purpose, used photobucket instead of Flickr. Photobucket allows you to see the pic without the extra step. I may switch all mine to Photobucket, not sure yet. Flickr photos have an extra quality or “pop.” That’s the dilemma. :-\ I compared Flickr, Photobucket and Imgur once, and noticed a quality difference in how the photos were displayed. You gave me food for thought.
The left one was more in the shade, or the flash caught it different…just judging from the background. It happens in my photos too. One side will look a tad darker.