DNN 5.6.3 (not in list)

When editing a forum post all formatting must be set again. IE. A post that is paragraphed is edited, all paragraphs and/or line breaks are stripped out and must be reapplied before re-posting.

Is there a setting control somewhere to stop this happening.

Do you have HTML input enabled in the forum features tab, if so, what editor are you using?

HTML is enabled on editor Text Box.

I can not reproduce this.

Can you try using a different editor? The Active Editor does not have many options, and you can disable them if you want.

Changed to Active Editor.