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"Search in files" button does not cancel navigation

This problem happens in any repository, with URL like: https://github.com/sindresorhus/refined-github

Here's the video showing this behavior:

https://user-images.githubusercontent.com/10355528/113172844-cba6a800-9283-11eb-92ec-dd5782dd02f6.mp4

This also happens with <kbd>t</kbd> key, which is equivalent to push the button.

Thanks.