Some (not all) incoming emails exhibit odd behavior. When I select them in the message pane, the email appears in the preview pane for about 3 seconds - and then the preview pane empties. The subject is visible, everything else - from, to, cc, forward buttons, body - is just blank.
It’s definitely related to the email content. If I save the email as an eml file and double click to view it, the same behavior occurs. If I open the eml in Thunderbird I can view it fine.
I have an eml file exhibiting this behavior if you want me to forward it to you.
There’s a 3.3mb jpg attachment, but that’s the only thing that’s unusual about it.