Well, I've been compiling a list of known bugs here on the Wiki, but I've managed to fix most of them. The only one I can warn you about is the Wikia Upload Bug, which is effecting most, if not all, of Wikia right now. This bug just causes new uploads of images not to show... for a very long time. This can be quite annoying, but has some potential, easy fixes.
- Change the image size by 1px.
- This can sometimes "trick" the upload servers into working.