player - Transparency and Rendering Issues in Qt Player Example on Linux (Wayland)

Description:-

In Qt Player example on a Linux system using Wayland, two distinct issues have been identified. Firstly, the video rendering area appears to be transparent, revealing the content of the previous window. Secondly, dragging the player app leads to the display of black glitches.

Reproduction Steps:

1. Build and Run Media Player Example on Linux(Wayland).
2. Drag the app.

Expected Behavior: The video rendering area should be black but not Transparent.

Actual Behavior:

1. The video rendering area is transparent, displaying content from the previous window.
2. Dragging the player app results in the appearance of black glitches on the video rendering screen.

Environment:

• Operating System: ubuntu 22.04
• Display Server: Wayland
• Desktop Environment: Gnome 42.9