Steps to reproduce:
1) Open the latest attached project (876931_API_Switch.zip).
2) Open 'scene'.
3) Enter play mode.
- The Video Player component plays a video as expected.
4) Stop play mode.
5) In PlayerSettings, disable 'Editor Metal Support'.
6) Enter play mode.
- The video doesn't show up; camera background is visible.

Note: this might cause a crash.

The video is played, but not rendered (audio can be heard).
Switching back to Metal starts rendering the video normally again. This doesn't occur if video is not played before switching the Graphics API. The issue doesn't occur on Windows (when switching between DirectX and OpenGL).

Reproduced on:
5.6.0b6, 5.6.0b4

Tested on