PvZ2 : Tiger Grass bug

I found a bug on the grass tiger plant. I have planted 5 grass tigers in 5 different lanes. Initially there was no problem, each of the tigers attacked the zombies that approached. When the tiger died, it would take a few seconds for the tigers to reappear. However, in the middle of the match, on one of the grass tiger in the lane, the tiger no longer came out to attack zombies (i waited for 1 minute and the tiger still didn't appear) and that happened in almost every match I played. I respectfully request to fix this bug, I really appreciate it