Hi Peter!
Take a look at the preferences page for Display options => Format. The second entry box shows the headers that should be shown with the View => Selected Headers; if that got cleared to empty somehow, you'd probably get the behavior you're seeing.
That's not it. The setting still has the default value "from to date subject cc", and "Selected Headers" in the menu works as expected. The problem is that the option is stuck at "No Headers".
Carlos
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