John,
I just checked and unicode was selected. The last time I thought about this stuff the encoding was "Western". I selected western but the menu froze and I had to kill FF. Argh! The setting reverted to "Unicode" and this strange behavior.
This is the beta FF (55.0b6)
After the message-id above I see "Content-Type: text/plain; charset=utf-8; format=flowed". My locale was en_us.utf8 but I changed it to en_us in an attempt to defeat this bug. No luck unless you count bad luck.
I'm wondering if the keyboard is "designed" for a different country/language. The keyboard doesn't appear to be broken (nice try Lucifer)... the keyboard IS or appears to be acting like it's from a different country. Could this be the case?
THANKS for your response!
George..
Message: 4
Date: Fri, 30 Jun 2017 10:25:29 -0400
Subject: Re: Strange characters appearing in text windows
Content-Type: text/plain; charset=utf-8; format=flowed