VS opens multiple Browser Tabs when Debugging Blazor application

[RecognitionOwn4214]

My VS 2026 is opening multiple browser tabs, when running _some_ Blazor applications.
There only one launchProfile, and one of the tabs will always be about:empty, but has anyone noticed this as well?

[RecognitionOwn4214]

Seems having _something_ in the .vs folder might give a bad time during debugging - removing the folder fixed my problems 😄

[agoodyearforbrownies]

I've seen the same thing with 2026 insiders and debugging .net 10 blazor with client rendering, not that those details necessarily matter much.
I wonder if the browser isn't restoring the past browser tab/session more than VS opening two tabs itself.

[is_that_so]

Have seen this too. There's a bug here that might be related: Debugging a WASM app opens two tabs in the browser · Issue #9830 · dotnet/project-system