Rated 5 out of 5 stars

This goes for both, Firefox, and Thunderbird 54 beta.
In the Add-Ons Manager - Extensions:
entering an add-on in the search box, e.g. enigmail
There are multiple hits in the search results, and for each hit the 'Last Updated' column shows 'January 1, 1970'.
This doesn't happen when disabling the add-on.
Otherwise a great add-on.

Update
I'm still seeing this with a new profile. And it also happens with FF53.
http://imgur.com/RWDtnxb.png
http://i.imgur.com/5XTagrp.png
http://i.imgur.com/Yn9oEO7.png

Update 2
Success. Using 1.4.1b1 the problem is gone. Tested w/ FF 54.0b9 on both, Linux and Windows.
Thanks for the quick fix.

This review is for a previous version of the add-on (1.4). 

Hi,

this looks like a server issue with Mozilla servers. Time stamps are correct in my tests.

http://i.imgur.com/5b1qesN.png
http://i.imgur.com/1txW5jA.png

Please test on a new Firefox/Thunderbird profile.


Edit
This happens on Linux, but not on Windows. Not sure why yet. I will look into it.


Edit2
Install and test this beta:
https://addons.mozilla.org/addon/amversionnumber/versions/1.4.1beta1

!!!

Make sure you restart after installing 1.4.1b1, even if this is a restartless add-on.

!!!