There's a work around to this issue.
Upload your image to another site like Facebook, Twitter, Tumblr, Deviantart, Imgur, so on.
Right click on the image and Copy the Image Location
Paste the image's url in the forums. BOOM! Picture
The fix for this issue isn't currently a high priority so I recommend using this work around until they announce the fix. For now I'm going to mark this thread as Answered though, since the staff already knows about it and there's a way around it.