Hi Sign,
Yes it has been problem free for me for some time now. I have disabled all addons, checked on default, still doing same thing. Install, re install a few times. We have disabled it for now to see where the conflict might be.
yes it does, it doesn't show when first creating a node, only when editing an existing node does the option even show up, then only when you return to edit again does it update to display a newly uploaded icon, so it may look like it's not working, but it seems to work just fine notwithstanding those minor display issues in admin
This addon loads on any page. Not just on forum list.
It adds 240ms to each page load on a closed site. If I unleash thousands of users on it this will be a problem.