Bug with Video Player Banner ?
We have embedded Twitch on one page of our web site using iframe. see (https://www.tvctk.com/live.html)
We use the Video Player Banner to post a particular image whenever we are off line. It worked fine until a week ago. Now , sometimes it posts our image, sometimes it posts the generic Offline image from Twitch. The image we have uploaded meets Twitch requirements ( size and filetype). Streaming works OK when live.
Refreshing the screen a few times ( 3 to 5) changes from one image to the other on a Windows 10 PC. On a Samsung Android phone the image is always the Generic Offline image from Twitch.
I contacted Twitch support - not much help so far