Hi @Jay_Williams, let me see if I can help out here.
You may experience that certain app content is displayed with unwanted cropping on your Xperia device with 21:9 display. It is not possible to avoid this by changing the display settings on the device.
Currently, some apps are able to fit 16:9 full-screen content on part of a 21:9 display. Others stretch this content to fit the vertical dimensions of the display, resulting in unwanted cropping on the sides. In some apps it is possible to switch between these modes, in others it is not possible. In the link below you can find a discussion where users mention games that work in 21:9 format.
/t5/Xperia-1/Android-games-that-work-in-21-9-format/td-p/1377457
I hope that answered your question!
