Kunai left l2 problem

[Cenimm]

I have notis that when I hold l2 it release the bottom even when I hold it in, I don't know if someone els have the same problem. Its when I have it attached to the phone I have Latest update on everything.
I will add that's its not directly, it happens after some seconds.

[Anders_ASUS]

You can download an app like this one and see if it flickers or just stops pressing down after a while.
If this is the case, then you probably need a new kunai
https://play.google.com/store/apps/details?id=ru.elron.gamepadtester&hl=en

[Cenimm]

I found out that the bottom release by itself so I will send it away. Thanks for the app info.