Thanks for the repro steps. This is a minor inconvenience(especially since it’s inside a togglable block so we can hide the content by toggling details), but a fix could be welcome.
I will put a pr-welcome on the topic if someone wants to give it a try on fixing it.
The plugin repo is here: GitHub - discourse/discourse-spoiler-alert: A plugin for discourse to hide spoilers behind the spoiler-alert jQuery plugin · GitHub
But I have the feeling it’s more of a Hide Details feature issue.
Content in Hide Details doesn’t always display (and interact as well?) as expected. For example, hotlinked pictures, links, videos etc won’t be displayed. It will only show the links:
