I can confirm that disabling the History API Injection protection option in that extension fixes this, it does seem to be a bug with the extension that effects various websites
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Basic usage of the Image search UI results in `Uncaught DOMException: The operation is insecure.` Under Firefox
Closing this - since it appears to be related to the ClearURLs extension.
If anyone has this issue without the extension, please feel free to comment and we can re-open.
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