Episode Details

This story was originally published on HackerNoon at: https://hackernoon.com/fixing-one-pixel-edge-artifacts-in-jetpack-compose-drawbehind.
How a five-tab Android TabBar exposed a one-pixel gradient seam—and how overscan, clipping, and full-state testing made it robust.
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A TabBar in our Android design system rendered correctly with four tabs but showed thin edge seams with five. The issue came from drawing a gradient exactly to fractional pixel boundaries. Adding a small horizontal overscan and clipping the result made the component robust across different layouts and states.