This problem has nothing to do with the settings (3rd screenshot)
Your problem is a Postbit problem only..
And there 2 different problems:
1. is the bbcode in signature.. (I am not familiar with that) but i think in a couple of hours chuck can test that out... (its 2 AM where he is and he is sleeping sunday morning ;-)
2. Problem on the left the icons dont show up..
I guess you are using a some postbit hack..because i have a dropdown for those information when I click the username..
(or is this new to 3.8 in legacy postbit???)
Anyway, the problem is, the path to the icons is wrong
.. or better it is a relative path images/elements/buttons/icon.png
there are 2 solutions possible: solution 1:
find where the icons are defined (template, plugin, code etc)
and make the path absolute so it gets to be : http://yoursite.com/forum/images/elements/buttons
(if its in a template you simply add $vboptions[bburl]/ in front of images/) solution 2:
take your forum/images/element/buttons
/ folder and copy it with the contents to
these are my ideas..