Issues with integrated player while using DeX mode

[Efficient_Good_5784]

I wonder if this an issue with DeX's side.

For those that don't know, DeX is Samsung's proprietary version of a computer OS on their phones and tablets: https://www.samsung.com/us/apps/dex/
Des is using DeX to handle running the Jellyfin Android app that is then shown on any screen through HDMI.
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Edit:
I can confirm this is an issue with DeX and the Jellyfin Android app. Since I also have a Samsung phone that supports DeX, I used DeX with Jellyfin set to launch the integrated ExoPlayer.

Using the phone as a mouse pad, when you double-click on the screen to fast-forward or rewind, the first time is successful.
If you then bring up the ExoPlayer GUI by single-clicking on the screen, the transparent circle that indicates a double-click is permanently brought back up and will not disappear until your next double-click.

Just to point out, this issue doesn't happen when running the Android app normally (not using DeX on the Samsung phone).
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Edit 2:

Using an external player such as VLC will solve this issue but, every time I exit from the player it will close both the player and Jellyfin instead of returning to Jellyfin.

How are you exiting from the VLC player on DeX? I tried it and closing out of the VLC player will not take me out of Jellyfin. Seems like a solution to your problem as it doesn't have this issue.