I've noticed an odd phenomenon affecting my use of Wikia. Lately, if I try to open an image's file page and that image is used in a talk comment or user blog comment, I'll be redirected to that comment instead of the file page. Stranger still, this appears to only happen when I'm using Firefox and doesn't happen when I'm using, for example, Google Chrome.
Possibly related aside, my Firefox browser recently updated to version 39.0.