I only filled out a survey when I first accessed the test server, with bugs I'd noticed about Zeus. Here are a few I noted on the test server:

Quest Issue
‘your first production’ unidentified text
Older production chains didn’t give credit for having (600/600) tools/12h. reloaded and still not finished

Decided not to build a building (crossbowsmith). The ‘do you really want to…?” window had no resources that I would get back.
Watching the replay of battles, the arrow in the center turns to the side and flashes from on to the side or under the compass, rather than turning.
When sign in, the “new quest” arrow is flashing, but no new quest, just unfinished ones that I had already seen.