[Infrastructure Bug] Deploy hooks return 201 Created but deployments never created

Hey guys. Deploy hooks are returning 201 Created with job IDs (e.g., p1H42nOrGhh8Gdp6UhJk) but the deployments never appear in the dashboard and the job IDs don't exist in Vercel's system. Vercel Support confirmed the job ID doesn't exist in the system.

This affects only the stage branch since April 27. Git pushes to main build immediately and work fine.

Project ID: prj_R0YpubcsUCLeF1Wlwjvhhcl6FD2B

What we have tried:

  • Disconnect and reconnect Git repository in Vercel settings
  • Full uninstall and reinstall of Vercel GitHub App
  • Created a completely new Vercel project (jn-fotograf-stage) connected to the same repository — same issue
  • Triggered deploy hooks manually — returns 201 Created but job ID never exists in system
  • Verified all settings: Preview environment set to all unassigned branches, no custom ignored build step, repository access correct on GitHub side
  • Pushed empty commits to stage branch — GitHub confirms push received but Vercel never reacts

Vercel Support via chat confirmed this is a backend infrastructure bug but cannot create a support case for Hobby plan users. This is not a configuration issue. Thanks