The sponsor chat is new (or back as one would say) and there are few things that need to be worked out. The main thing that bugs me is that images can't be opened in a new tab. So I made a Greasemonkey script for Firefox or Tampermonkey on Chrome. Was inspired by @FisherX post on making the chat look old again.

Install one of those on your browser and add a new script. Then you can copy the script located on my Github

RT Sponsor Chat Clickable Images

Cheers