Sound on but gui says off

When I open the game on android and have turned the sound off earlier the sound is still on and i have to toggle the sound on then off again to turn it off.

Device / system ?

Moving it to technical section as this is probably specific mobile unit related issue.

Pixel 4XL Android 10

Same issue - i have tried turning phone off and on again, as well as amending menu options
android - mi max 2