Screenshot Resizing

So, in a move that screamed, "HUBRIS!" I poked fun at someone's screenshot size yesterday because I couldn't read the text in his submission and when I clicked on it, it became so large a monitor double my size would have had problems viewing it in its entirety.

Then I submitted a screenshot yesterday and it seems to suffer the same issue, and I do know how to size a picture, so...just wondering if this is a known issue or what. I've not had this problem in the past with submissions.

Just an update, it's not doing it now. So the hell if I know what's going on; ah well. At least it looks good in the regular window.