Hi, I just struggled forever to get SPOILER tags to work in my contest instructions. This was the original spoiler that had been there in prior iteration of the contest. It would no longer open.
The IMG link within was fine and worked independently. When I tried to reapply spoiler --and it didn't matter whether I typed the code or used the button -- the spoiler bar refused to open.
I also moved the thread back out of the graveyard in case it was a graveyard issue, but the spoiler still would not open. I've seen another contest instruction spoiler broken in the same way, so I thought it was time to ask the pros.