False Window inset is set when dismissing keyboard preventing apps from using the full screen. #118761
Description
This issue appears on android api 30 and above. (pre api 30 takes a different path and uses a heuristic to set window metrics).
When setting that the app wants full screen behavior by using WindowInsetsController.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
The app will go fullscreen but then when keyboard is opened and closed the app incorrectly sets a window inset the size of the navigation bars even though there is no navigation bar.
Example screenshot showing the content in white and the background in red.
Original bug content "Extracting generic issue from b/258263557 where incorrect viewInsets were transiently being reported as the soft keyboard is being shown. "