Arena 7 wins

Platform, device version and operating system:
ios, 5.5.1r27557,ios 13.6
Screenshot or image:

What you were expecting to happen, and what actually happened:
playing arena mode, then happened 7wins as the picture

How often does this happen? When did it begin happening?
2021.6.16 15:59 (GMT+8)

Steps to make it happen again
press the area of “skip” “continue” “to battle” buttoms very very quick

Isn’t it just 7 battles, meaning you lost one on your way to 6 wins?

Not sure what is written on the screen, but in english it says: Battle 7, which means it’s battle #7 and player had lost one on the way…