The clipRect culling in DisplayListBuilder can sometimes fail to cull a clip due to round-off error in the math and this case happens to trigger when trying to cull against the initial frame bounds of a Pixel 6a with its uncommon 2.625 DPR as a scaling transform. An optimization in the culling tests for axis-aligned transforms (very common in Flutter) happens to do the right thing for this odd case, likely due to less math to incur round-off errors.