fix(tracing): Fix orphaned TTID/TTFD spans in the trace view by antonis · Pull Request #6437 · getsentry/sentry-react-native

antonis · 2026-07-10T09:30:43Z

📢 Type of change

Bugfix
New feature
Enhancement
Refactoring

📜 Description

The fix threads the parent transaction's trace_id (read once from event.contexts.trace.trace_id in processEvent) into all three createSpanJSON call sites: addTimeToInitialDisplay (manual), addAutomaticTimeToInitialDisplay, and addTimeToFullDisplay.

💡 Motivation and Context

Fixes #6432.

💚 How did you test it?

Added a regression test asserting the automatic TTID span inherits both trace_id and parent_span_id from the transaction (reactnavigation.ttid.test.tsx).
Extended the existing TTID/TTFD span assertions in timetodisplay.test.tsx to check trace_id matches the transaction's.
Full suite green: 1698 tests / 126 suites. Lint, circular-dep, and API report all clean.

📝 Checklist

I added tests to verify changes.
No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
I updated the docs if needed.
I updated the wizard if needed.
All tests passing.
Public API changes reviewed by another Mobile SDK team member or implemented according to the develop docs spec.
No breaking changes.

🔮 Next steps

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

github-actions · 2026-07-10T09:31:08Z

Semver Impact of This PR

⚪ None (no version bump detected)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).

fix(tracing): Fix orphaned TTID/TTFD spans in the trace view by antonis in #6437

feat(tracing): Add reportFullyDisplayed() static API by antonis in #6419
feat(core): Track CaptureAppStartErrors adoption by antonis in #6429
feat(replay): Track mobile replay network capture adoption by antonis in #6428
feat(tracing): Track standalone app start adoption by antonis in #6427
feat(tracing): Track appLoaded and extendAppStart adoption by antonis in #6426
feat(tracing): Track wrapExpoRouterErrorBoundary adoption by antonis in #6425
feat(core): Track NavigationContainer adoption by antonis in #6424
feat(core): Track GlobalErrorBoundary adoption by antonis in #6421

_{🤖 This preview updates automatically when you update the PR.}

cursor

✅ Bugbot reviewed your changes and found no new issues!

Comment @cursor review or bugbot run to trigger another review on this PR

^{Reviewed by Cursor Bugbot for commit 315a163. Configure here.}

TTID/TTFD spans created in the TimeToDisplay integration passed `parent_span_id` but no `trace_id`, so `createSpanJSON` minted a random `uuid4()` trace_id. Sentry groups spans by `trace_id` first, so the spans rendered as orphaned top-level traces despite a correct `parent_span_id`. Thread the transaction's `trace_id` (from `event.contexts.trace.trace_id`) into all three `createSpanJSON` call sites, matching the pattern already used by the app start integration and `createChildSpanJSON`. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

cursor

✅ Bugbot reviewed your changes and found no new issues!

Comment @cursor review or bugbot run to trigger another review on this PR

^{Reviewed by Cursor Bugbot for commit d9451ff. Configure here.}

github-actions · 2026-07-10T10:24:03Z

Android (legacy) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	414.64 ms	470.69 ms	56.05 ms
Size	49.74 MiB	55.26 MiB	5.52 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
`f3215d3`+dirty	411.11 ms	454.38 ms	43.27 ms
`d2eadf8`+dirty	414.64 ms	454.56 ms	39.92 ms
`b0d3373`+dirty	557.66 ms	579.42 ms	21.76 ms
`27d9693`+dirty	419.08 ms	469.12 ms	50.04 ms
`4e0b819`+dirty	420.56 ms	470.08 ms	49.52 ms
`9474ead`+dirty	411.45 ms	446.80 ms	35.35 ms
`0bd8916`+dirty	412.77 ms	451.31 ms	38.54 ms
`f9c1ed4`+dirty	431.00 ms	466.22 ms	35.22 ms
`3d536d1`+dirty	524.34 ms	547.32 ms	22.98 ms
`04207c4`+dirty	459.19 ms	518.54 ms	59.35 ms

App size

Revision	Plain	With Sentry	Diff
`f3215d3`+dirty	48.30 MiB	53.49 MiB	5.19 MiB
`d2eadf8`+dirty	48.30 MiB	53.48 MiB	5.18 MiB
`b0d3373`+dirty	48.30 MiB	53.58 MiB	5.28 MiB
`27d9693`+dirty	49.74 MiB	55.09 MiB	5.34 MiB
`4e0b819`+dirty	49.74 MiB	54.81 MiB	5.07 MiB
`9474ead`+dirty	48.30 MiB	53.61 MiB	5.30 MiB
`0bd8916`+dirty	48.30 MiB	53.57 MiB	5.26 MiB
`f9c1ed4`+dirty	49.74 MiB	54.86 MiB	5.12 MiB
`3d536d1`+dirty	49.74 MiB	55.26 MiB	5.52 MiB
`04207c4`+dirty	43.75 MiB	48.12 MiB	4.37 MiB

sentry · 2026-07-10T10:24:09Z

📲 Install Builds

Android

🔗 App Name	App ID	Version	Configuration
Sentry RN	io.sentry.reactnative.sample	8.18.0 (98)	Release

⚙️ sentry-react-native Build Distribution Settings

github-actions · 2026-07-10T10:28:14Z

iOS (legacy) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	3840.88 ms	1223.73 ms	-2617.15 ms
Size	4.98 MiB	6.53 MiB	1.55 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
`b9bebee`+dirty	3850.15 ms	1227.51 ms	-2622.64 ms
`3d377b5`+dirty	1218.48 ms	1219.51 ms	1.03 ms
`1a2e7e0`+dirty	3842.49 ms	1220.04 ms	-2622.45 ms
`e5bb5f6`+dirty	3826.14 ms	1212.24 ms	-2613.90 ms
`6acdf1d`+dirty	3844.33 ms	1212.96 ms	-2631.38 ms
`41d6254`+dirty	3845.71 ms	1224.51 ms	-2621.20 ms
`9210ae6`+dirty	3815.93 ms	1214.14 ms	-2601.79 ms
`c004dae`+dirty	3850.32 ms	1227.79 ms	-2622.53 ms
`4e0b819`+dirty	3839.05 ms	1210.75 ms	-2628.30 ms
`0b5120f`+dirty	3838.39 ms	1232.91 ms	-2605.48 ms

App size

Revision	Plain	With Sentry	Diff
`b9bebee`+dirty	5.15 MiB	6.68 MiB	1.53 MiB
`3d377b5`+dirty	3.38 MiB	4.76 MiB	1.38 MiB
`1a2e7e0`+dirty	4.98 MiB	6.46 MiB	1.49 MiB
`e5bb5f6`+dirty	4.98 MiB	6.51 MiB	1.53 MiB
`6acdf1d`+dirty	4.98 MiB	6.51 MiB	1.53 MiB
`41d6254`+dirty	5.15 MiB	6.70 MiB	1.54 MiB
`9210ae6`+dirty	5.15 MiB	6.68 MiB	1.53 MiB
`c004dae`+dirty	5.15 MiB	6.67 MiB	1.51 MiB
`4e0b819`+dirty	4.98 MiB	6.46 MiB	1.49 MiB
`0b5120f`+dirty	5.15 MiB	6.68 MiB	1.53 MiB

github-actions · 2026-07-10T10:36:32Z

iOS (new) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	3838.30 ms	1217.62 ms	-2620.68 ms
Size	4.98 MiB	6.53 MiB	1.55 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
`b0d3373`+dirty	3842.49 ms	1218.49 ms	-2624.00 ms
`ef27341`+dirty	3835.20 ms	1212.23 ms	-2622.97 ms
`e5bb5f6`+dirty	3825.74 ms	1217.30 ms	-2608.43 ms
`44c8b3f`+dirty	3849.24 ms	1209.94 ms	-2639.31 ms
`68672fc`+dirty	3832.22 ms	1228.29 ms	-2603.93 ms
`5748023`+dirty	3844.74 ms	1225.49 ms	-2619.26 ms
`6acdf1d`+dirty	3835.35 ms	1218.30 ms	-2617.06 ms
`2c735cc`+dirty	1223.33 ms	1224.38 ms	1.04 ms
`100ce80`+dirty	3843.57 ms	1226.46 ms	-2617.12 ms
`9210ae6`+dirty	3834.11 ms	1216.64 ms	-2617.47 ms

App size

Revision	Plain	With Sentry	Diff
`b0d3373`+dirty	5.15 MiB	6.68 MiB	1.53 MiB
`ef27341`+dirty	5.15 MiB	6.68 MiB	1.53 MiB
`e5bb5f6`+dirty	4.98 MiB	6.51 MiB	1.53 MiB
`44c8b3f`+dirty	5.15 MiB	6.66 MiB	1.51 MiB
`68672fc`+dirty	5.15 MiB	6.71 MiB	1.55 MiB
`5748023`+dirty	5.15 MiB	6.68 MiB	1.53 MiB
`6acdf1d`+dirty	4.98 MiB	6.51 MiB	1.53 MiB
`2c735cc`+dirty	3.38 MiB	4.74 MiB	1.35 MiB
`100ce80`+dirty	5.15 MiB	6.67 MiB	1.51 MiB
`9210ae6`+dirty	5.15 MiB	6.68 MiB	1.53 MiB

github-actions · 2026-07-10T11:07:46Z

Android (new) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	460.92 ms	501.94 ms	41.02 ms
Size	49.74 MiB	55.26 MiB	5.52 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
`a50b33d`+dirty	353.21 ms	398.48 ms	45.27 ms
`d038a14`+dirty	405.08 ms	444.36 ms	39.28 ms
`68672fc`+dirty	407.55 ms	442.96 ms	35.41 ms
`ad66da3`+dirty	411.49 ms	449.38 ms	37.89 ms
`f170ec3`+dirty	505.96 ms	551.88 ms	45.92 ms
`27d9693`+dirty	438.63 ms	514.08 ms	75.46 ms
`41d6254`+dirty	406.20 ms	445.52 ms	39.32 ms
`68ae91b`+dirty	515.04 ms	578.08 ms	63.04 ms
`5ee78d6`+dirty	411.18 ms	437.83 ms	26.65 ms
`ae37560`+dirty	428.96 ms	456.86 ms	27.90 ms

App size

Revision	Plain	With Sentry	Diff
`a50b33d`+dirty	43.94 MiB	48.94 MiB	5.00 MiB
`d038a14`+dirty	48.30 MiB	53.49 MiB	5.19 MiB
`68672fc`+dirty	48.30 MiB	53.61 MiB	5.31 MiB
`ad66da3`+dirty	48.30 MiB	53.49 MiB	5.19 MiB
`f170ec3`+dirty	48.30 MiB	53.57 MiB	5.26 MiB
`27d9693`+dirty	49.74 MiB	55.09 MiB	5.34 MiB
`41d6254`+dirty	48.30 MiB	53.60 MiB	5.30 MiB
`68ae91b`+dirty	49.74 MiB	54.79 MiB	5.05 MiB
`5ee78d6`+dirty	48.30 MiB	53.58 MiB	5.28 MiB
`ae37560`+dirty	48.30 MiB	53.60 MiB	5.29 MiB

antonis added a commit that referenced this pull request Jul 10, 2026

docs: Point changelog entry at PR #6437

511ece9

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

antonis changed the title ~~fix(tracing): Inherit transaction trace_id on TTID/TTFD spans~~ fix(tracing): Fix orphaned TTID/TTFD spans in the trace view Jul 10, 2026

antonis force-pushed the fix/ttid-ttfd-trace-id-6432 branch from 9c90e4f to 315a163 Compare July 10, 2026 09:34

cursor Bot reviewed Jul 10, 2026

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sentry Bot reviewed Jul 10, 2026

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Comment thread packages/core/src/js/tracing/integrations/timeToDisplayIntegration.ts Outdated

antonis force-pushed the fix/ttid-ttfd-trace-id-6432 branch from 315a163 to d9451ff Compare July 10, 2026 10:11

antonis added the ready-to-merge Triggers the full CI test suite label Jul 10, 2026

cursor Bot reviewed Jul 10, 2026

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antonis marked this pull request as ready for review July 10, 2026 10:19

antonis requested review from alwx and lucas-zimerman as code owners July 10, 2026 10:19

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📢 Type of change

📜 Description

💡 Motivation and Context

💚 How did you test it?

📝 Checklist

🔮 Next steps

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github-actions Bot commented Jul 10, 2026

Android (legacy) Performance metrics 🚀

Baseline results on branch: main

Startup times

App size

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sentry Bot commented Jul 10, 2026

📲 Install Builds

Android

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github-actions Bot commented Jul 10, 2026

iOS (legacy) Performance metrics 🚀

Baseline results on branch: main

Startup times

App size

Uh oh!

github-actions Bot commented Jul 10, 2026

iOS (new) Performance metrics 🚀

Baseline results on branch: main

Startup times

App size

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github-actions Bot commented Jul 10, 2026

Android (new) Performance metrics 🚀

Baseline results on branch: main

Startup times

App size

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antonis commented Jul 10, 2026 •

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