Bugzilla incorrectly requests to select product

[Rainer Orth via Gcc]

I've just tried to file a PR, but each time on submission I only get

        First, you must pick a product on which to enter a bug:

and all my input is lost.  I've triple-checked that I *had* selected the
product first

        Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University