Hey, I just noticed another BUG that I don’t recall anyone has mentioned yet. (To be sure, I haven’t read this entire thread.)
When a post with a spoiler is quoted, and the quote includes the spoiler, the spoiler is shown OPEN in the quote box, not closed. The “Show” button is present, but doesn’t do anything.
This is serious. Spoilers shouldn’t be shown until the user clicks on “Show” – even when the spoiler is part of a quote box. Here’s an example that I found here: