You need to take the issue to those developers, so that they can investigate the issue and escalate the issue with Twitch. They have more information about their extensions in order to determine where the issue you are having is. I can’t go debug StreamElements extension, of the MTGA deck builder extension and see what a problem is, but I can go debug my own and see if it’s something I need to fix, or something I need to report to Twitch.
It’s likely an environmental problem with your browser, and it’s plugins.