On the Beta update when you turn off the alarm the symbol of notification is still showing on the top right corner. On the old One UI 3 the clock symbol or notification will disappear when you turned off the alarm.
I think it is best to have it disappear when the alarm is off as it causes confusion because I think it is still on.
Alarm icon is supposed to disappear when alarm is turned off. Please erase the device cache using steps below. If issue persists, Please update Samsung members app to latest version from galaxy store and send us an error report from the Samsung member’s app -> Beta Feedback -> Error Reports to help us debug the issue.
Turn off the device.
Press and hold the Volume Up key and the Side key.
When the Android logo displays, release both keys.
An 'Installing system update' message may show briefly before the Android Recovery menu options appear.
Press the Volume down key several times to highlight Wipe cache partition.
Press Side key to select.
Press the Volume down key to highlight Yes, then press the Side key to select.
When the process is complete, Reboot system now is highlighted.
