Whenever I try to edit an issue page it comes up with "Whoops, looks like we ran into an error" regardless of whether I'm changing appearances or text. I've checked on other types of pages and I can still edit those.
I'm using Chrome on Windows.
EDIT: It just worked for one issue but when I moved on to another, same results. It may have something to do with the fact that the edit I made that worked was a large one whereas the one that didn't was just the removal of one credit and addition of another.