In the Technical Update Blog for April 10, 2012; Dopp speaks of this briefly in the "Select Known Issues" section of the blog.
Dopp: Thumbnailing of SVG images (using .PNG for thumbnails) does not seem to be working properly at the moment.
and to annoy me more:
And one additional note: Due to our Annual Engineering All-Hands, there will be no release or technical update next week.
That means the 24th is the next Technical Update, and who knows if this will be addressed then.
But before I end this blog, I want to tell everyone, I do care about images being viewable. I uploaded good sized PNGs cause I "thought" that I could. They are good images, and most of the time I have no problem seeing them (outside Wikia). I have been brought into question at a number of wikis in the last few days. Belittling my contributions that I have done over the years. It hurts, and this is a very unfair. I have been at wikia (joined Ghostbusters Wiki in September of 2008) for over three years. Never had issues with images like this til this week.