Fullscreen & onscreen animation conflict

[joe-replin]

Subject of the issue/enhancement/features

When a media player is in its starting state (poster image showing), an attached _onScreen animation option will cause the page to shift as well as lock the position of the page instead of allowing the media player to go full screen.

Your environment

• v5.22.3 FW
• v6.1.1 Media
• 105.0.5195.54 Chrome
• Windows 10

Steps to reproduce

1. Add an _onScreen animation to either the block or component containing a media player. I used 'fade-in-bottom' for the animation.
2. Before playing a video, select the fullscreen button.

Expected behaviour

The media player while the poster image is showing should expand to the fullscreen state.

Actual behaviour

An attached _onScreen animation option will cause the page to shift as well as lock the position of the page instead of allowing the media player to go full screen.