Backport #2056: [core] Fix spurious "Event cursor missing after initial load" warning

[github-actions]

Automated backport of #2056 to stable (backport job run).

AI recommendation: The same cursor-clobbering bug exists on stable in packages/core/src/runtime/helpers.ts (in getWorkflowRunEvents, which does nextCursor = response.cursor without preserving the prior cursor on a trailing empty page). This is a self-contained bug fix to existing functionality with regression tests, and matches the criteria for backport. Conflicts are likely (function rename from getWorkflowRunEvents to loadWorkflowRunEvents on main, and the test file structure differs), so the resulting PR will need careful human review.

Merge conflicts were resolved by AI (opencode with anthropic/claude-opus-4.7). Please review the conflict resolution carefully before merging.

[changeset-bot]

🦋 Changeset detected

Latest commit: 99e14cd

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 16 packages

Name	Type
@workflow/core	Patch
workflow	Patch
@workflow/builders	Patch
@workflow/cli	Patch
@workflow/next	Patch
@workflow/nitro	Patch
@workflow/vitest	Patch
@workflow/web-shared	Patch
@workflow/web	Patch
@workflow/world-testing	Patch
@workflow/astro	Patch
@workflow/nest	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/nuxt	Patch

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Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 22, 2026 6:45pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 22, 2026 6:45pm
example-workflow	Ready	Preview, Comment	May 22, 2026 6:45pm
workbench-astro-workflow	Ready	Preview, Comment	May 22, 2026 6:45pm
workbench-express-workflow	Ready	Preview, Comment	May 22, 2026 6:45pm
workbench-fastify-workflow	Ready	Preview, Comment	May 22, 2026 6:45pm
workbench-hono-workflow	Ready	Preview, Comment	May 22, 2026 6:45pm
workbench-nitro-workflow	Ready	Preview, Comment	May 22, 2026 6:45pm
workbench-nuxt-workflow	Ready	Preview, Comment	May 22, 2026 6:45pm
workbench-sveltekit-workflow	Ready	Preview, Comment	May 22, 2026 6:45pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 22, 2026 6:45pm
workbench-vite-workflow	Ready	Preview, Comment	May 22, 2026 6:45pm
workflow-swc-playground	Ready	Preview, Comment	May 22, 2026 6:45pm
workflow-tarballs	Ready	Preview, Comment	May 22, 2026 6:45pm
workflow-web	Ready	Preview, Comment	May 22, 2026 6:45pm

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
workflow-docs	Skipped		May 22, 2026 6:45pm

[github-actions]

🧪 E2E Test Results

❌ Some tests failed

Summary

	Passed	Failed	Skipped	Total
❌ ▲ Vercel Production	899	2	67	968
✅ 💻 Local Development	970	0	86	1056
✅ 📦 Local Production	970	0	86	1056
✅ 🐘 Local Postgres	970	0	86	1056
✅ 🪟 Windows	88	0	0	88
❌ 🌍 Community Worlds	15	69	0	84
✅ 📋 Other	492	0	36	528
Total	4404	71	361	4836

❌ Failed Tests

▲ Vercel Production (2 failed)

express (2 failed):

• outputStreamWorkflow no startIndex (reads all chunks)
• outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_01KS8G3T7TXD22WK9THAK6CPGA | 🔍 observability

🌍 Community Worlds (69 failed)

mongodb-dev (1 failed):

• dev e2e should rebuild on imported step dependency change

redis-dev (1 failed):

• dev e2e should rebuild on imported step dependency change

turso-dev (1 failed):

• dev e2e should rebuild on imported step dependency change

turso (66 failed):

• addTenWorkflow | wrun_01KS8FZ6VYY059YE7H5Q44DBMV
• addTenWorkflow | wrun_01KS8FZ6VYY059YE7H5Q44DBMV
• wellKnownAgentWorkflow (.well-known/agent) | wrun_01KS8G12G199RAD4229QY9DFPT
• should work with react rendering in step
• promiseAllWorkflow | wrun_01KS8FZFAK2J8NC2HVCPWX1KJR
• promiseRaceWorkflow | wrun_01KS8FZMRHB815CCM0JAXJDW16
• promiseAnyWorkflow | wrun_01KS8FZQ3K999SSY9NN25Z290F
• importedStepOnlyWorkflow | wrun_01KS8G1ED2GDWM0EJMK7P52VTE
• readableStreamWorkflow | wrun_01KS8FZSGB31XQ1503KNQQ68Y4
• hookWorkflow | wrun_01KS8G05X16TFC95SHCWN3AVJ4
• hookWorkflow is not resumable via public webhook endpoint | wrun_01KS8G0C6VYQJ1HC7QHRD2M3H0
• webhookWorkflow | wrun_01KS8G0GXKAY2TFXSJQQ17C0DT
• sleepingWorkflow | wrun_01KS8G0QN6YTPK95WRZ0X8H32B
• parallelSleepWorkflow | wrun_01KS8G168ZQG4BTAQHWG28SBM6
• nullByteWorkflow | wrun_01KS8G1B92KN2SHCNNKGMHWZCW
• workflowAndStepMetadataWorkflow | wrun_01KS8G1D7DBAN2RQ308BEMEGH1
• outputStreamWorkflow no startIndex (reads all chunks)
• outputStreamWorkflow positive startIndex (skips first chunk)
• outputStreamWorkflow negative startIndex (reads from end)
• outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
• outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
• outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
• outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_01KS8G3T7TXD22WK9THAK6CPGA
• fetchWorkflow | wrun_01KS8G48GMKMTT7KMSYV7GBYP6
• promiseRaceStressTestWorkflow | wrun_01KS8G4CQDR1V9S7GSE1RC03F0
• error handling error propagation workflow errors nested function calls preserve message and stack trace
• error handling error propagation workflow errors cross-file imports preserve message and stack trace
• error handling error propagation step errors basic step error preserves message and stack trace
• error handling error propagation step errors cross-file step error preserves message and function names in stack
• error handling retry behavior regular Error retries until success
• error handling retry behavior FatalError fails immediately without retries
• error handling retry behavior RetryableError respects custom retryAfter delay
• error handling retry behavior maxRetries=0 disables retries
• error handling catchability FatalError can be caught and detected with FatalError.is()
• error handling not registered WorkflowNotRegisteredError fails the run when workflow does not exist
• error handling not registered StepNotRegisteredError fails the step but workflow can catch it
• error handling not registered StepNotRegisteredError fails the run when not caught in workflow
• hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_01KS8G7MNRH6D59HK37BHTDK69
• concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01KS8G804MB4D1QYG7708MD7NC
• hookDisposeTestWorkflow - hook token reuse after explicit disposal while workflow still running | wrun_01KS8G8EV44MHXF1RBGCMJ0FXW
• stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars) | wrun_01KS8G903KPSSK1K5DZH8AWG8X
• stepFunctionWithClosureWorkflow - step function with closure variables passed as argument | wrun_01KS8G9956S2ZTK5G6XPAZ41EX
• closureVariableWorkflow - nested step functions with closure variables | wrun_01KS8G9EAKWZEGD70T2Z61E03J
• spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step | wrun_01KS8G9G86C4Y5PQC8EVH7YYH7
• health check (queue-based) - workflow and step endpoints respond to health check messages
• health check (CLI) - workflow health command reports healthy endpoints
• pathsAliasWorkflow - TypeScript path aliases resolve correctly | wrun_01KS8G9YKJ46CPV2WTMG1QDHZ9
• Calculator.calculate - static workflow method using static step methods from another class | wrun_01KS8GA3PDEB9VH457EGT7RPCH
• AllInOneService.processNumber - static workflow method using sibling static step methods | wrun_01KS8GA9T94VV91E3QR6D0SC1R
• ChainableService.processWithThis - static step methods using this to reference the class | wrun_01KS8GAG2V4XRBWZCVB7CAA425
• thisSerializationWorkflow - step function invoked with .call() and .apply() | wrun_01KS8GAPD7MQC1XFBPJYB8XFEB
• customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE | wrun_01KS8GAWZHBFQNGV73RSPFJ4HF
• instanceMethodStepWorkflow - instance methods with "use step" directive | wrun_01KS8GB33CKF10Y32QB2F5N2K3
• crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context | wrun_01KS8GBHWC5AVWFYWKJ6MQV739
• stepFunctionAsStartArgWorkflow - step function reference passed as start() argument | wrun_01KS8GBTBSCZA6W1EHFNABTRYM
• cancelRun - cancelling a running workflow | wrun_01KS8GC1X8AGGP1FPQ526Z1TFN
• cancelRun via CLI - cancelling a running workflow | wrun_01KS8GCAME7KMB7JXRHJYTXA46
• pages router addTenWorkflow via pages router
• pages router promiseAllWorkflow via pages router
• pages router sleepingWorkflow via pages router
• hookWithSleepWorkflow - hook payloads delivered correctly with concurrent sleep | wrun_01KS8GCNWY1DQJ9DT7X535K8EF
• sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_01KS8GD4RXF68JA7A5HSNVAN2B
• sleepWithSequentialStepsWorkflow - sequential steps work with concurrent sleep (control) | wrun_01KS8GDFWAEHCTAD7EJATAZ9MG
• importMetaUrlWorkflow - import.meta.url is available in step bundles | wrun_01KS8GDQC874PFXX463Z86FF66
• metadataFromHelperWorkflow - getWorkflowMetadata/getStepMetadata work from module-level helper (#1577) | wrun_01KS8GDSBZ9G6TCGBNT5N0T3GH
• resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01KS8GDVCBTVTTN4JSX4N6PVBA

Details by Category

❌ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	81	0	7
✅ example	81	0	7
❌ express	79	2	7
✅ fastify	81	0	7
✅ hono	81	0	7
✅ nextjs-turbopack	86	0	2
✅ nextjs-webpack	86	0	2
✅ nitro	81	0	7
✅ nuxt	81	0	7
✅ sveltekit	81	0	7
✅ vite	81	0	7

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	82	0	6
✅ express-stable	82	0	6
✅ fastify-stable	82	0	6
✅ hono-stable	82	0	6
✅ nextjs-turbopack-canary	69	0	19
✅ nextjs-turbopack-stable	88	0	0
✅ nextjs-webpack-canary	69	0	19
✅ nextjs-webpack-stable	88	0	0
✅ nitro-stable	82	0	6
✅ nuxt-stable	82	0	6
✅ sveltekit-stable	82	0	6
✅ vite-stable	82	0	6

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	82	0	6
✅ express-stable	82	0	6
✅ fastify-stable	82	0	6
✅ hono-stable	82	0	6
✅ nextjs-turbopack-canary	69	0	19
✅ nextjs-turbopack-stable	88	0	0
✅ nextjs-webpack-canary	69	0	19
✅ nextjs-webpack-stable	88	0	0
✅ nitro-stable	82	0	6
✅ nuxt-stable	82	0	6
✅ sveltekit-stable	82	0	6
✅ vite-stable	82	0	6

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	82	0	6
✅ express-stable	82	0	6
✅ fastify-stable	82	0	6
✅ hono-stable	82	0	6
✅ nextjs-turbopack-canary	69	0	19
✅ nextjs-turbopack-stable	88	0	0
✅ nextjs-webpack-canary	69	0	19
✅ nextjs-webpack-stable	88	0	0
✅ nitro-stable	82	0	6
✅ nuxt-stable	82	0	6
✅ sveltekit-stable	82	0	6
✅ vite-stable	82	0	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	88	0	0

❌ 🌍 Community Worlds

App	Passed	Failed	Skipped
❌ mongodb-dev	4	1	0
❌ redis-dev	4	1	0
❌ turso-dev	4	1	0
❌ turso	3	66	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	82	0	6
✅ e2e-local-dev-tanstack-start-stable	82	0	6
✅ e2e-local-postgres-nest-stable	82	0	6
✅ e2e-local-postgres-tanstack-start-stable	82	0	6
✅ e2e-local-prod-nest-stable	82	0	6
✅ e2e-local-prod-tanstack-start-stable	82	0	6

---

📋 View full workflow run

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❌ Some E2E test jobs failed:

• Vercel Prod: failure
• Local Dev: success
• Local Prod: success
• Local Postgres: success
• Windows: success

Check the workflow run for details.