First of all: Happy and Prosperous New Year to all of you
Here my first problem of the year:
When building an app for Windows Phone using Universal 8.1 SDK, and setting the orientation in Visual Studio to Landscape (or Landscape-flipped) makes appear 3 partial buttons at the bottom of the screen (right side of the image).
Just a little further info: if rotation lock is disabled, they will rotate and disappear when put the device in portrait mode (and reappear when put again in landscape mode).
What are those buttons? Is that something Unity puts or the OS?
You can check by creating a simple XAML project without Unity at all and see if those buttons are still there.
Not a definitive answer, but I can say that for sure it’s related to the phone.
I didn’t noticed before, but in fact those 3 lines are present in all applications (i.e. camera, settings, …)
The only related article I’ve found is this, but unfortunately since now without a solution.