Camera matrix doesn't update when ARCore switches to another camera

[DennisBauer]

SPECIFIC ISSUE ENCOUNTERED

On the Pixel 7 Pro ARCore switches to the wide angle camera when going close to something and autofocus is enabled. There's no way this can be influenced and I couldn't find anything in the changelog or the documentation of the focus mode. The problem with this happening is that the viewport changes but the camera matrix doesn't update so I cannot adapt to the changes and fix the positioning of my 3D objects.

VERSIONS USED

• Android Studio: Android Studio Giraffe | 2022.3.1 Patch 2
• ARCore SDK for Android: 1.39.0 and 1.40.0
• Device manufacturer, model, and O/S: Google Pixel 7 Pro with Android 14
• Google Play Services for AR (ARCore): 1.39.232070593 or 1.40.232630293 On Windows, use: adb shell pm dump com.google.ar.core | findstr /i "packages: versionName" On macOS, use: adb shell pm dump com.google.ar.core | egrep -i versionName\|packages:
• Output of adb shell getprop ro.build.fingerprint: google/cheetah/cheetah:14/UP1A.231005.007/10754064:user/release-keys

STEPS TO REPRODUCE THE ISSUE

1. Use the hello_ar_kotlin sample project and enable auto focus
2. Open the app, put it to the background and foreground again (workaround to fix existing autofocus issue: https://github.com/google-ar/arcore-android-sdk/issues/1312#issuecomment-995514679)
3. Move the device slowly close to a surface. At a specific distance (about 10cm) ARCore switches to the wide angle camera of the device. When moving further away it switches back.

WORKAROUNDS (IF ANY)

• Disabling the autofocus but that has other downsides and doesn't make sense for me

ADDITIONAL COMMENTS

• Tested also on other devices but wasn't able to reproduce it on those: Pixel 7 (panther), Pixel 6 Pro (raven), Pixel 6 (oriole), Pixel 5 (redfin), Samsung Galaxy S22+ (SM-S906B/DS)