Does OBS inject any JS variables or make any information known to the page it's displaying (or not displaying)? I tried to use the on focus/on blur functions in JS to detect this, but the Chromium built into OBS seems to always have the page "unfocused". Is there a way to detect the Browser Source layout's visibility/location/etc to ensure that it's fully displayed on screen? I'm attempting to build something predicated on the fact that I can detect page visibility, but the OBS docs are sparse on the Browser Source details.