[CentOS] Thunderbird 78.4.0 after update

Wed Nov 18 05:03:01 UTC 2020
R C <cjvijf at gmail.com>


after an update I  ended up with Thunderbird 78.4.0, it looks a little 
different, which is ok, but it seems that all my descriptions and also 
alerts disappeared.

Is that a known problem? If so,  how to fix that.  (btw;  I am not sure 
if I ever installed/used lightning, but that addon/extension doesn't 
seem to be there anymore.)

If it is a known problem, is there a way to fix that?