@julian Thank you for your answer, and yes, that could be where the problem comes from.
I have these plugins on : default composer, alignment, markdown, simple spoiler.
PS. But I don't have the "redactor plugin" if by that you mean a wysiwyg editor.
We have an existing install of NodeBB. We could not find existing features which enable:
Is there an existing list of filters we can refer to before we start customizing the product? Are these features coming in future releases? Thanks in advance.