It recently came to my attention while using osmand navigation (which i don't use frequently), that in landscape mode there is a big black bar till under the camera cutout. On a pixel 9 pro with the 'big' frontcam cutout, this means a relatively substantial amount off screen estate (9%).
I'm not sure if this 'issue' has been here since i've started using gos a couple of month ago, or got introduced trough a recent update (android 15?).
In first instance, i've thought this is an app specific thing, that the app needed to have code properly implemented to make use of this feature, and would leave it at that.
But i've did some testing, and found out that like 80% of all apps installed don't support true full screen and show that big black bar, including some 'native' apps. I thought it was hard to believe that 80% of app developers (for example brave) wouldn't implement this, i guess, basic feature. Certainly for a navigation app lol. Combined with some native apps not supporting true full screen, i thought off documenting it here as there could be a potential issue, though i could be wrong.
I've tested this with some 'native' apps;
Big black bar: App store, Phone, Messaging, Vanadium, Settings
True full screen: Auditor, Files, Info, Pdf viewer
With non native apps;
Big black bar: Brave, Fossify Messages, Contacts, Gallery & Calendar, FinAmp, Molly, Nextcloud, Ollama, Telegram FOSS, Thunderbird, VLC, Breezy weather, Whatsapp
True full screen: Bitwarden, Jellyfin, LibreTube, Material Files, Paperless