Steam deck apps tap area limited in game mode

[andydotxyz]

Checklist

• I have searched the issue tracker for open issues that relate to the same problem, before opening a new one.
• This issue only relates to a single bug. I will open new issues for any other problems.

Describe the bug

the font size and window size (desktop mode) are good now, and app responds well in desktop mode.
However in game mode the tappable area seems to be limited to a portion from the top-left depending on the size of the content.
The tappable area varies but seems to be approximately 2/3 of the window.

How to reproduce

• Switch steam deck to desktop mode
• Load a fyne app onto a Steam Deck
• Favourite the app
• Switch to game mod
• Run the app and try tapping various areas of the app

Screenshots

n/a visuals are good

Example code

any app

Fyne version

v2.5.0

Go compiler version

1.21

Operating system and version

SteamOS

Additional Information

No response