[jurajmajerik]

Problem

In the metric results tooltip, a variant without enough data shows a dash for Delta, but the dash renders red as if the variant were losing.

The color ternary treats winning === undefined (no credible interval yet) the same as winning === false.

Changes

• The Delta dash now renders in the default text color when there is no data. Green/red coloring still applies once a delta exists.
• The results table already guards this case; only the tooltip was affected.

How did you test this code?

Verified the isWinning code path returns undefined when the variant has no interval. Not run: visual check in the app.

Automatic notifications

• Publish to changelog?

Docs update

None

🤖 Agent context

Autonomy: Human-driven (agent-assisted)

Claude Code session. Skills invoked: /wt, /writing-pr-descriptions. Investigated the tooltip rendering, found the unguarded ternary in MetricRowGroupTooltip.tsx, and applied a one-line fix.

[trunk-io]

😎 Merged successfully - details.

[github-actions]

🤖 CI report

✅ Trunk lane — non-backend lane

This PR is assigned to the non-backend lane. It does not run backend Python tests and may merge in parallel with PRs in other lanes.

⚠️ Bundle size — 🔺 +18 B (+0.0%)

Uncompressed size of every built .js bundle, compared against the base branch.

Total: 68.12 MiB · 🔺 +18 B (+0.0%)

No file changed by more than 1000 B.

_{Posted automatically by build-bundle-size-report · uncompressed bytes from dist-report}

✅ Eager graph — within budget

How much code each root ships on the eager path — downloaded and parsed before the surface is interactive. Measured from the esbuild output chunks (post-tree-shake, static imports only); lazy import() / React.lazy chunks are not counted.

Root	Eager (shipped)	Δ vs base	Budget
entry (logged-out pages, app bootstrap) src/index.tsx	1.37 MiB · 22 files	no change	███░░░░░░░ 30.3% of 4.51 MiB
authenticated shell (every logged-in page) src/scenes/AuthenticatedShell.tsx	8.82 MiB · 3,247 files	no change	█████████░ 90.8% of 9.71 MiB

🟢 node_modules/monaco-editor/ stays out of src/index.tsx
🟢 src/lib/components/ActivityLog/describers stays out of src/index.tsx
🟢 [object Object] stays out of src/index.tsx
🟢 [object Object] stays out of src/index.tsx
🟢 node_modules/monaco-editor/ stays out of src/scenes/AuthenticatedShell.tsx
🟢 src/lib/components/ActivityLog/describers stays out of src/scenes/AuthenticatedShell.tsx
🟢 [object Object] stays out of src/scenes/AuthenticatedShell.tsx
🟢 [object Object] stays out of src/scenes/AuthenticatedShell.tsx

Largest files eagerly shipped from src/index.tsx

Size	File
126.8 KiB	../node_modules/.pnpm/react-dom@18.3.1_react@18.3.1/node_modules/react-dom/cjs/react-dom.production.min.js
24.6 KiB	../node_modules/.pnpm/buffer@6.0.3/node_modules/buffer/index.js
6.3 KiB	../node_modules/.pnpm/react@18.3.1/node_modules/react/cjs/react.production.min.js
4.5 KiB	../node_modules/.pnpm/@jspm+core@2.1.0/node_modules/@jspm/core/nodelibs/browser/process.js
3.9 KiB	../node_modules/.pnpm/scheduler@0.23.2/node_modules/scheduler/cjs/scheduler.production.min.js
1.4 KiB	../node_modules/.pnpm/base64-js@1.5.1/node_modules/base64-js/index.js
1.3 KiB	src/RootErrorBoundary.tsx
912 B	../node_modules/.pnpm/ieee754@1.2.1/node_modules/ieee754/index.js
789 B	src/scenes/ChunkLoadErrorBoundary.tsx
762 B	src/index.tsx

Largest files eagerly shipped from src/scenes/AuthenticatedShell.tsx

Size	File
307.0 KiB	../node_modules/.pnpm/posthog-js@1.422.0_@types+react@18.3.27_react@18.3.1/node_modules/posthog-js/dist/rrweb.js
267.7 KiB	../node_modules/.pnpm/@posthog+icons@0.38.0_react-dom@18.3.1_react@18.3.1__react@18.3.1/node_modules/@posthog/icons/dist/posthog-icons.es.js
263.4 KiB	../node_modules/.pnpm/posthog-js@1.422.0_@types+react@18.3.27_react@18.3.1/node_modules/posthog-js/dist/module.js
252.5 KiB	src/taxonomy/core-filter-definitions-by-group.json
154.2 KiB	../node_modules/.pnpm/re2js@0.4.1/node_modules/re2js/build/index.esm.js
126.8 KiB	../node_modules/.pnpm/react-dom@18.3.1_react@18.3.1/node_modules/react-dom/cjs/react-dom.production.min.js
104.7 KiB	src/lib/api.ts
95.2 KiB	../packages/quill/packages/quill/dist/index.js
93.3 KiB	../node_modules/.pnpm/prosemirror-view@1.40.1/node_modules/prosemirror-view/dist/index.js
90.6 KiB	../node_modules/.pnpm/@tiptap+core@3.20.6_@tiptap+pm@3.20.6/node_modules/@tiptap/core/dist/index.js

_{Posted automatically by check-eager-graph · sizes are eager output bytes (shipped, post-tree-shake) from the esbuild metafile · part of #32479}

✅ Toolbar bundle — eager 2.26 MiB within budget

What the toolbar ships to customer pages, measured from the esbuild output (minified, post-tree-shake). The eager set is the entry plus everything statically imported from it — fetched before any feature runs; deferred chunks load lazily. The eager guardrail is 5.72 MiB. Each output file must also stay below 10 MB, where CloudFront stops compressing it. The module boundary is enforced separately by check-toolbar-graph.

Metric	Size	Δ vs base	Budget
Eager (shipped) entry + static imports	2.26 MiB · 18 files	no change	████░░░░░░ 39.5% of 5.72 MiB
Deferred (lazy)	2.11 MiB · 45 files	no change	n/a — loads on demand
Loader dist/toolbar.js	1.1 KiB	no change	█░░░░░░░░░ 5.8% of 19.5 KiB

Largest eagerly-shipped chunks

Size	File
749.2 KiB	dist/toolbar/toolbar-app-XJ7BMNHX.css
588.2 KiB	dist/toolbar/chunk-chunk-QXQCK5SA.js
484.7 KiB	dist/toolbar/chunk-chunk-QMGLBVDO.js
133.8 KiB	dist/toolbar/chunk-chunk-EUOYQWGB.js
131.8 KiB	dist/toolbar/chunk-chunk-FDH2IBXT.js
71.3 KiB	dist/toolbar/toolbar-app-DKGYKGXO.js
69.0 KiB	dist/toolbar/chunk-chunk-TSAL54PB.js
35.6 KiB	dist/toolbar/chunk-chunk-TMLTCDV6.js
20.9 KiB	dist/toolbar/chunk-chunk-BHKA3C5E.js
6.8 KiB	dist/toolbar/chunk-chunk-DV7IWQNF.js

_{Posted automatically by check-toolbar-size · sizes are toolbar output bytes (shipped, post-tree-shake) from the esbuild metafile}

✅ Dist folder size — 🔺 +70 B (+0.0%)

Total size of the built frontend/dist folder (all assets), compared against the base branch.

Total: 1434.83 MiB · 🔺 +70 B (+0.0%)

✅ Playwright — all passed

All tests passed.

View test results →

[trunk-io]

   

View Full Report ↗︎ ⋅ Docs

[github-actions]

🦔 Hogbox preview · ✅ ready

▶ Open the preview

🔑 Login	test@posthog.com / 12345678 (demo data)
🧩 Running	this PR's backend and frontend, on the PostHog :master base
🔗 Link	stable across rebuilds — a re-push swaps the box underneath, the URL stays
🔒 Access	tailnet only (PostHog VPN)
🛠️ Admin	inspect & debug state in hogland
💤 Idle	sleeps after ~30 min idle (snapshot to S3, zero node cost) and wakes on your next visit in ~30s, behind a brief "waking up" screen

_{commit a0cd14d · box box-31d8970eb8be · ready in 711s (push → usable) · build log · rebuilds on every push, torn down on close}

[greptile-apps]

_{Reviews (1): Last reviewed commit: "fix(experiments): don't color tooltip de..." | Re-trigger Greptile}

[stamphog]

Trivial one-line UI color-logic fix within the owning team, no risk territory involved.

• Author wrote 0% of the modified lines and has 48 merged PRs in these paths (familiarity MODERATE).
• 👍 on the PR from greptile-apps[bot].

Gate mechanics and policy version

Gate		Result
prerequisites	✓	all clear
deny-list	✓	no deny categories matched
size	✓	2L, 1F substantive — within ceiling
tier	✓	T1-agent / T1a-trivial (2L, 1F, single-area, fix)
stamphog 2.0.0b4		.stamphog/policy.yml @ a0cd14d · reviewed head a0cd14d

[deployment-status-posthog]

Deploy status

Environment	Status	Deployed At	Workflow
dev	✅ Deployed	2026-08-28 09:35 UTC	Run
prod-us	✅ Deployed	2026-08-28 09:59 UTC	Run
prod-eu	✅ Deployed	2026-08-28 10:01 UTC	Run