Assegnate 4 su 5 stelle

Used the AddOn for a long time in previous Thunderbird versions and loved it. I'm running Thunderbird 52.2.1 64bit on LinuxMint 18.1 Cinnamon now, Display Contact Photo 1.3.1. When I reply / reply-to-all to a message, the "To/CC" fields are blank.
Disabled the AddOn, restarted Thunderbird. Now the "To" and "CC" fields are filled properly. Found solution via
https://forum.manjaro.org/t/thunderbird-does-not-fill-the-reply-to-email-field-after-last-update/21796/9
Four stars anyhow, as the developer states (2017-07-09) "Works with Thunderbird 38.0-39.*", see https://addons.mozilla.org/en-US/thunderbird/addon/display-contact-photo/?src=userprofile