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Hi @peipooh

You’ll need to use CSS or JavaScript to create the accordion effect. You could write that yourself or you could take the easier route and use a framework such as Bootstrap. Their collapse.js plugin is what you’d need to use.

@peipooh Strange. Have not seen this issue. You might want to do some basic troubleshooting https://codex.buddypress.org/getting-started/troubleshooting/
If that doesn’t work and if you are having issues only in your forums and not in blog posts or Activity Streams, etc. please post at the bbPress foruns.