Thunderbird 52.1.1 stopped displaying the reply-to address.
A little searching suggested this is due to 'an' add on, so I switched a few off till successful.
The culprit was the "Display contact photo" add on, once disabled Thunderbird worked again as should.
A little searching suggested this is due to 'an' add on, so I switched a few off till successful.
The culprit was the "Display contact photo" add on, once disabled Thunderbird worked again as should.