Voice chat message pop up to many times

Map(Specific map): City Of Wings

Game mode:

Vip Escort

Repeatability:

Sometimes - 50%

Operating System:

win 10

Description:

When enabling voice chat the message that it is turn on pop up to many times.

Screenshots:

I can't take screenshots because my prtsc key on my keyboard doesn't work.

And in game control option menu to change the key doesn't exist.

Video:

https://www.youtube.com/watch?v=GQ4ysep_UJU