Sometimes it's impossible to select a report type using the radio buttons. I found a few references to this in some report threads, but did not see an existing thread about the issue in this forum.

For example, when creating this report just now, I had to use the browser devtools to edit the form and manually add the "checked" attribute to the radio button for "Incorrect content" because clicking the radio buttons did nothing.

This has been a recurring problem on the site all week, for me. Disabling browser extensions doesn't fix it.