Exact same problem started today suddenly. Just left this message in a different thread, but it can be more useful here
Similar issue started today. Just pressing the Screenshare button causes the browser to close instantly. All tabs get closed and the browser offers to restore tabs when I open it again.
Happens not only in Brave, but also Chrome and Vivaldi. As if the problem is deeper than a single browser.
Most interestingly, it does not happen on my other computer. The only thing I could think of (although probably unrelated) is my upgrade. I put a new ssd in my pc and updated my motherboard’s bios yesterday. But could it cause something like this?
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Tried that site, and indeed, it crashes my browser, too. Thanks for suggesting other keywords to search for. On it.