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FlutterFragment defaults to TransparencyMode.transparent. With surface rendering that makes FlutterSurfaceView call setZOrderOnTop(true), so Flutter's surface covers the host window, where TalkBack draws its focus border (flutter/flutter#37025). Build createFragment() fragments as opaque, which keeps the faster surface rendering. Dialog fragments must stay transparent, so render them with a TextureView instead.
xVemu
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xVemu
marked this pull request as ready for review
October 27, 2026 13:19
zltnDC
approved these changes
Oct 28, 2026
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TalkBack's focus border is not visible on Flutter screens from
createFragment.FlutterFragmentis transparent by default, so itsFlutterSurfaceViewcallssetZOrderOnTop(true)and covers the border, which the host window draws (flutter/flutter#37025).createFragmentnow builds the fragment asTransparencyMode.opaqueand keeps surface rendering.RenderMode.texture.