Circuit display breaks when requesting new circuit in "-.example.com"
From tor-browser#40155 (closed), some user used this as a workaround for selecting a new circuit for a site that was returning an empty response. But, after doing this the circuit display is broken (it disappears from the UI). To reproduce:
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Visit some website e.g. https://www.duckduckgo.com
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In the same tab, visit https://-.duckduckgo.com
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The circuit UI is displayed correctly, but after selecting "New circuit for this site" it breaks.
It's a corner case, but I think we could handle this so that the UI doesn't break.