Evidence: #27840

6/6 rows captured · 8 visual pairs · R6(a/b) verified · no unverified rows.

Chrome 156.0.0.0 on Linux x86_64 through T3 Browser panel; no device emulation; DPR 2; 100% font scaling, 16px root/Inter; fixed JS clock 2026-11-03T12:00:00Z. Native reduced-motion override unavailable: JS preference emulated, CSS motion disabled. Fonts ready + 1s resource-idle, then two pixel-identical frames ≥500ms apart for every still.

1440×1100 CSS (1280×978 PNG); 390×2600 CSS (780×5200 PNG). Full viewport captures; no device emulation.

R1: GitLab status dot becomes green, Not authenticated badge and sign-in instructions become Authenticated as the app-blurred julius54 account, and its switch becomes blue/on. The shorter row moves GitCafe, Forgejo/Gitea, Bitbucket, Azure DevOps and Writing & review (including Advanced) upward; their content stays the same. Borders/shadows and whitespace move with those rows.
R2: Setup Required disappears and the GitLab icon/title/description become fully opaque as the source is enabled. Search query is GitLab on both sides.
R3/R4/R5: zero changed pixels across each entire captured frame. R6: only case (a) gains auth status --all; case (b) does not retry. No unrelated visible differences found at zero threshold.

R1-1440-dark

before · after · diff0 · diffT16