The preview image is shown as 16:9, but after taking an image, the size is 960x720 (in emulator), so even if preview was 16:9, the resulting image is 4:3.
This started happening after updating from ref 85ef2eeeed9a5846b0becdef76436911acea3c07 to ref b483fbc1d0bb476e3ec4826a9af7c994fd6ffe07 (also happens in 1.0.0+1)
The preview image is shown as 16:9, but after taking an image, the size is 960x720 (in emulator), so even if preview was 16:9, the resulting image is 4:3.