Why fly.io website crashes after leaving the tab open for some time?

The title says it all, I noticed that if I leave a tab open (and unfocused) in chrome with some page from Fly.io dashboard, after some time the page will just crash and show the following message:

Does it happens to other people?

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I don’t recall seeing this. What do you get in the 500 of that request?

You mean the response?

Basically the html to that message:

Ah, gotcha; I thought it might be trying to serve JSON. Ah well, at least your screenshot contains request IDs and servers, so curious employees can have a poke about.

Same issue; I frequently need to refresh the page.

This happens to me too on Windows Chrome. But on not macos Chrome.

It gets annoying when the tab crashes during a live debug session.

We are currently investigating the internal cause l.

Did y’all get one in the past few hours?

We shipped a mitigation to help with that around 2025-07-23T11:30:00Z so feel free to let us know if it bites you again from now on too

if you’re reading the logs, I would recommend using flyctl (fly logs -a your-app-name) instead.

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