I can confirm this happening. None of the three buttons work, no matter requirements are fulfilled or not.
Game version: v1.76-(9cde3aa) (2019-03-14 17:14)
HTML5 Yes/No: No
Game world: zz1
Browser/IOS/Android + version: Chrome 72.0.3626.121
Flash Player version: 32.0.0.156
Operating System: Win 10
Screen resolution: 1920x1080
Account name:
Humans or Elves: Elves
Reproducibility: 5/5
Quest title: The origin of prejudice (Required: Have six Manufactories at level 25 or higher)
Current situation:
There are 3 buttons on the quest window instead of 2 and none of them work.
Expected situation:
The buttons to work properly.
Reproduction Steps
0. Have less than 6 manufactories level 25
1. Reach the mentioned quest.
2. Open quest window.
3. Observe: There are 3 buttons (Decline, Ok, Finish) instead of 2 (Decline, Ok).
4. Click Decline.
5. Observe: Nothing happens.
6. Click Ok.
7. Observe: Nothing happens.
8. Click Finish.
9. Observe: Nothing happens.
10. Build or upgrade some more manufactories and have at least 6 manufactories level 25
11. Open quest window.
12. Observe: There are 3 buttons (Decline, Ok, Finish) instead of 2 (Decline, Finish).
13. Click Decline.
14. Observe: Nothing happens.
15. Click Ok.
16. Observe: Nothing happens.
17. Click Finish.
18. Observe: Nothing happens.