Platform, device version and operating system:
PC / Android
Screenshot or image:
A screenshot won’t help; it only shows the normal mimic battle.
What you were expecting to happen, and what actually happened
How often does this happen? When did it begin happening?
Every time a mate encounter a MIMIC battle, he can tap on it, but nothing happens—the kingdom becomes blocked, and he can no longer undertake any explorations there. This has already happened in several different kingdoms. Restart game don’t help.
Steps to make it happen again
Presumably, this issue could escalate to the point where all kingdoms become unplayable whenever a Mimic battle appears.