Disable all extensions and check whether muting websites works normally. If it works normally, you can begin enabling extensions one by one until you find which extension is causing issues, and then uninstall or disable the problematic extension.
If disabling all extensions doesn’t resolve the issue, I suggest clearing your browsing data. You can do that via brave://settings/clearBrowserData. Type brave://settings/clearBrowserData in the address bar, go to Advanced and change Time range to All time. Select Cookies and other site data, Cached images and files, and Site and Shields Settings → Clear data.
Note: Clearing Site and Shields Settings browsing data resets global Brave Shields settings, re-adjust global Brave Shields settings via brave://shields if needed.
Both of your suggestions don’t seem to work. But the one thing have noticed is that the voice symbol on the tab can mute the site. But not the mute site option when you right click the tab
I’m puzzled as to why muting websites works as expected in a private window but not in a regular one. Usually, the reason would be an extension since users have to explicitly configure extensions to work in private window.
Please, re-check the following:
Close all tabs.
Open brave://extensions/ and disable all extensions along with Developer mode.
Close Brave.
Open Brave and go to brave://extensions/ once again. Make sure all extensions and Developer mode are disabled.
ok now I get it. It because of the extension named as habitca site keeper. When I disable it everything seems to work. Thanks for your reply and help. Really appreciate it