discuss.px4.io was upgraded to latest Discourse version of 1.6.0.beta3 on 10th Tue May 12:44 GMT-0.
If you notice anything abnormal, please let us know.
Under support the discussion header should be there. It's only on the drop down and not on the dedicated page. Sometimes the drop down glitches in chrome on Android 6 and you cannot click the discussion topic.