Hello,
The Bug...
"When composing an email, the email window will be hidden behind the main Zimbra Browser Window, whenever Zimbra does a mail (or screen) refresh."
I reported this bug back in March on version 8.7.5. It has not yet been fixed in all the point releases since then. I'm hoping I can get some votes from people to fix this. It is very frustrating to be typing an email and have it dissappear!
https://bugzilla.zimbra.com/show_bug.cgi?id=107801
Thanks for any votes,
Daniel