Server islands error 500 in production after new build

[Fakerko]

Astro Info

Astro                    v5.1.2
Node                     v22.3.0
System                   macOS (arm64)
Package Manager          bun
Output                   server
Adapter                  @astrojs/node
Integrations             astro-page-insight
                         astro-critters
                         @astrojs/react
                         @sanity/astro

If this issue only occurs in one browser, which browser is a problem?

No response

Describe the Bug

Described on discord in this thread: https://discord.com/channels/830184174198718474/1324674185301069865

What's the expected result?

After new Astro build it should load the new server islands on the first load.

Link to Minimal Reproducible Example

https://discord.com/channels/830184174198718474/1324674185301069865

Participation

• I am willing to submit a pull request for this issue.

[github-actions]

Hello @Fakerko. Please provide a minimal reproduction using a GitHub repository or StackBlitz. Issues marked with needs repro will be closed if they have no activity within 3 days.

[Fakerko]

Just create a simple Server Island and run it in production a few days with daily build updates.

[matthewp]

@Fakerko We do have such a thing. https://server-islands.com/ has been running for many months. There's something particular about your setup that's causing this, which is why we need a reproduction to investigate.

[Fakerko]

I've also tried modifying the cache on the server for text/html files, so I'll see if that helps.

I'm closing for now.