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Bugfix: Instant navs devtools was not showing the final Page Load state#93603

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Bugfix: Instant navs devtools was not showing the final Page Load state#93603
samselikoff wants to merge 1 commit intocanaryfrom
sam/fix-instant-navs-devtools-page-load-state

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@samselikoff samselikoff commented May 7, 2026

The instant navs devtools wasn't showing the final state for Page Load because it wasn't setting null as the third value of the cookie.

Added a test that was failing to cover this as well.

@samselikoff samselikoff enabled auto-merge (squash) May 7, 2026 14:28
@samselikoff samselikoff requested a review from acdlite May 7, 2026 14:28
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github-actions Bot commented May 7, 2026

Stats from current PR

✅ No significant changes detected

📊 All Metrics
📖 Metrics Glossary

Dev Server Metrics:

  • Listen = TCP port starts accepting connections
  • First Request = HTTP server returns successful response
  • Cold = Fresh build (no cache)
  • Warm = With cached build artifacts

Build Metrics:

  • Fresh = Clean build (no .next directory)
  • Cached = With existing .next directory

Change Thresholds:

  • Time: Changes < 50ms AND < 10%, OR < 2% are insignificant
  • Size: Changes < 1KB AND < 1% are insignificant
  • All other changes are flagged to catch regressions

⚡ Dev Server

Metric Canary PR Change Trend
Cold (Listen) 812ms 810ms ✓ █████
Cold (Ready in log) 774ms 775ms ✓ ██▆▇▇
Cold (First Request) 1.201s 1.199s ✓ █▇▁█▄
Warm (Listen) 811ms 811ms ✓ █████
Warm (Ready in log) 774ms 775ms ✓ ██▆█▇
Warm (First Request) 574ms 574ms ✓ █▇▄▆▄
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 811ms 809ms ✓ █████
Cold (Ready in log) 781ms 779ms ✓ ▆▆██▇
Cold (First Request) 3.226s 3.199s ✓ ▂▃▆▆▃
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Warm (Ready in log) 783ms 781ms ✓ ▆▆█▇▇
Warm (First Request) 3.220s 3.196s ✓ ▃▄▇▆▅

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 4.742s 4.713s ✓ ▆▆▃▇▇
Cached Build 4.736s 4.769s ✓ ▆▇▁█▅
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 23.728s 23.823s ✓ ▃▃▄▄▄
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node_modules Size 505 MB 505 MB ✓ ▁████
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📎 Tarball URL 
https://vercel-packages.vercel.app/next/commits/1ffd986102c0d3b7c91b04994637f19411294373/next

Commit: 1ffd986

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