I have a Steam Deck OLED and my Freetube uses the whole screen. Freetube v0.23.1 beta and SteamOS version 3.6.20

It might be the way you have Freetube installed. From Steam game mode, go to Freetube, then Properties, then Shortcut. This is what I have:

Target:

“/usr/bin/flatpak”

Start In:

/usr/bin

Launch Options:

run --branch=stable --arch=x86_64 --command=/app/bin/run.sh --file-forwarding io.freetubeapp.FreeTube @@u %u @@

I am not using any specific compatibility mode.

There is a problem though where the mouse pointer cannot select anything more than about halfway down the screen. To get around this, I have the controller config set as follows:

Right touchpad: mouse L2 & R2: right and left mouse buttons D-pad: arrow keys Left joystick - left: shift+tab Left joystick - right: tab Y: on-screen keyboard A: Enter

This will let you scroll with the d-pad, tab around, use keyboard, and select things with Enter.

I hope this helps.