Seems like a bug in CEF/OBS. If I look at dev tools on a page that loads cheermotes, the requests come up “(cancelled)”.
Placing the cheermote URL directly into BrowserSource just outright crashed my OBS a few times, and shows no requests or domain at all in dev tools when it doesn’t crash.
The partial Symantec cert distrust isn’t due till Chrome 66 and full distrust till Chrome 70. That whole point also doesn’t matter here because the domain in question uses a certificate from DigiCert, not Symantec.