New When I minimize Viber call - it is hidden and cannot go back to it


Jan 10, 2023
When I have Viber call, and minimize it, leave the Viber or enter some other app, the Viber call is still going on and I hear the sound, but I cannot return to it.
The only way for me to end the call is to turn off internet or turn off the phone. :SSSS
I have this problem since I bought a new Redmi Note 9 phone in may 2021.

Any possible solution?