Fullscreen PWA edge-to-edge x86 APK sampler
Summary
Issue 407420295 reports that installed fullscreen PWAs are not drawing into the display cutout area.
The patch changes fullscreen PWA immersive mode cutout handling to LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES.
Result: Fix verified on Android 10 (x86 emulator) and Android 13 (arm64). Both fullscreen and standalone PWAs now properly extend edge-to-edge with correct safe-area-insets.
Test Results
Test: PWA with
Expected: Content should extend into notch/cutout area with proper safe-area-insets
display: fullscreen + viewport-fit=coverExpected: Content should extend into notch/cutout area with proper safe-area-insets
Before (Unpatched)
innerHeight797px
safe-area-inset-top0.0px
resultCheck manually
After (Patched)
innerHeight845px
safe-area-inset-top48.0px
resultPASS (edge-to-edge)
✓ Fix Verified
Test: PWA with
Expected: Content should extend under transparent status bar
display: standalone + viewport-fit=coverExpected: Content should extend under transparent status bar
Before (Unpatched)
innerHeight749px
safe-area-inset-top0.0px
status barvisible/opaque
After (Patched)
innerHeight845px
safe-area-inset-top0.0px
status bartransparent/extended
✓ Fix Verified
Test: Fullscreen PWA back-swipe gesture behavior
Expected: Proper resize events with correct innerHeight values during navigation gestures
Expected: Proper resize events with correct innerHeight values during navigation gestures
Before (Unpatched)
innerHeight797px
safe-area-inset-top0.0px
resize events8
log pattern645→741→797
After (Patched)
innerHeight845px
safe-area-inset-top48.0px
resize events10
log pattern645→741→797→845
✓ Fix Verified
Test: Regular
Expected: Same behavior - fix is for PWA manifest, not JS API
document.requestFullscreen() API (not PWA)Expected: Same behavior - fix is for PWA manifest, not JS API
Before (Unpatched)
fullscreenElementyes
innerHeight845px
visualViewport846px
After (Patched)
fullscreenElementyes
innerHeight845px
visualViewport846px
Same behavior (expected baseline)
Test: Standalone PWA on
Expected: Edge-to-edge viewport with proper safe-area-insets (reporter's device)
Android 13 (API 33) with gesture navigationExpected: Edge-to-edge viewport with proper safe-area-insets (reporter's device)
Before (Unpatched)
Android13 (API 33)
innerHeight866px
screen.height915px
screen-innerHeight49px (gap!)
safe-area-inset-top24.0px
resultFAIL (not edge-to-edge)
After (Patched)
Android13 (API 33)
innerHeight914px
screen.height915px
screen-innerHeight1px ✓
safe-area-inset-top24.0px
resultPASS (edge-to-edge)
✓ Fix Verified on Android 13
Demo Pages
Interactive demos for manual verification:
- demo-fullscreen.html - Fullscreen PWA (Case 1)
- demo-standalone.html - Standalone PWA (Case 2)
- demo-backswipe.html - Backswipe test (Case 3)
- demo-request-fullscreen.html - requestFullscreen baseline (Case 4)
Downloads
Quick test flow
- Create emulator with display cutout:
cmd overlay enable com.android.internal.display.cutout.emulation.tall - Install unpatched APK, install demo as PWA, capture behavior
- Install patched APK over it, repeat the same demos
- For backswipe demo, perform repeated back-swipes and compare resize logs
Install commands
# Enable display cutout on emulator
adb shell cmd overlay enable com.android.internal.display.cutout.emulation.tall
# Unpatched
adb install -r ChromePublic-unpatched-x86.apk
# Patched x86 (emulator)
adb install -r ChromePublic-patched-x86.apk
# Patched arm64 (arm64 device)
adb install -r ChromePublic-patched-arm64.apk