Undo Send zimlet Zimbra OS 8.0.1 - hitting Send button not responding
I've just deployed Undo Send zimlet, and after activating, on the web client the hitting the Send button not responding.
If I drop down the button and then hit Send, it sends immediately, so I guess Undo Send is not involved/triggered.
Also, Send later works fine.
I've loved and used this Zimlet with Zimbra OS 6.x and 7.x without any problem.
Do anyone has this issue, or can anyone reproduce it?
p.s.: if it matters, I've moved from 7.x to 8.0.1 by ZExtras Migration toolkit, to a different OS and domain.