Best of: Sneaky Sas-car Bug

[Karate Sho]

I have completed the levels of this event, but the check mark did not appear in the menu. Why?
https://imgur.com/O3TSYIi

[Aldaviva]

This happened to me too, even though I got all 7 gold crowns and 1 card, and the card collection book says 100% for this area.

[Triband]

Thanks for reporting! We're still diagnosing why this issue occurs for some players, it's quite hard to reproduce on our devices.