'Blazor: What does the first character ☱ ☲ ☴ mean in the title?

Normally, the title of an index page should be like:

But sometimes I will see an additional changing character (when debugging), which seems to mean that there are something being loading:

This must be a feature rather than a bug, which has no bad influence.

I'm just curious about it.

So what does this character mean here, and when will it appear? Or maybe it isn't a feature of blazor, but of my own browser?

(The character seems to be here when the web browser is still running but the project has been stopped. But when I really want to reproduce this, it seems to be playing hide-and-seek with me...)



Solution 1:[1]

That is part of the Browser Refresh feature - when you see that it is waiting/trying to reconnect to the server - if it stays like that it has lost the connection and you should reload manually

https://cs.github.com/dotnet/sdk/blob/e77d401936a2cb7b13c6fc3ba7d793258bb63897/src/BuiltInTools/BrowserRefresh/WebSocketScriptInjection.js#L28

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Solution 1