Navigation gestures of android 11 is not transparent with brave only

I am using samsung m31. Everything was fine when i was using oneui 2.5. I recieved oneui 3.0 update a week earlier. From that day the navagation gesture indication is not transparent. I tried factory resering my phone and uninstall and installed brave. Still the problem exists. I have been waiting for 1 week for the bug to be solved. Still i don’t see any improvements.
Can someone suggest is it only for me or everyone and try to solve this.