We are using the stageWebView to embed video in one of our products. There is a page which contains several videos and audios. After upgrading to AIR 26, we found that the audio cannot be played after playing a video. We also found that once the app is opened again from sleep mode, the audio which you clicked to play (no sound) before go to sleep mode will be played automatically and the audio playing function will work again until a video is played.
We tested on iOS 10.3.x and iOS 10.2.x, all of them have the same problem.