Notification panel not working

[WarrenG]

2 days ago I noticed my Samsung s21 + notification panel can't open or be swiped if I open an app, it only opens the notification panel from the homesreen only. Once I open any app and try to drag down the notification panel, it's not responsive. What could be the problem?

[BrightonTakaz]

Check if you didn't change settings in Accessibility or notification settings on bar

[ngonidzashe]

Some accessibility settings might conflict with gesture navigation.
Go to Settings > Accessibility.
Check for any enabled features that modify gestures or display behavior e.g Assistant menu
Disable them and test the notification panel.

[ngonidzashe]

If you're using gestures for navigation try this:
Go to Settings > Display > Navigation bar.Switch to Button navigation and test if the notification panel works inside apps.If it works, switch back to gestures and check again.

[WarrenG]

I have tried switching the navigation bar button type and try pulling the notification panel while in an app. It still won't be responsive.

The crazy part is, when I try to switch the screen from portrait mode to landscape while in an app, I'm able to access the notification panel. If I switch back to portrait mode, It won't be responsive.

[ngonidzashe]

Or Go to Settings > Apps > Tap the three-dot menu in the top-right corner > Reset app preferences.

[ngonidzashe]

Or, If you're using Edge Panel, it can sometimes override swipe gestures, Go to Settings > Display > Edge panels.Disable the Edge panel, then test the notification panel.

[WarrenG]

I have tried all that, but none has worked so far, just from trying to reset the app preferences and restarting, still nothing.

[ngonidzashe]

Or try Clearing Cache Partition.
Turn off your phone.Press and hold Volume Up + Power button until the recovery menu appears.Use the volume buttons to navigate to Wipe cache partition and select it with the power button.Reboot the phone and test.