@Maxvax: As far as I can tell it is only possible to activate Snooze by tapping the on-screen prompt, or pressing the Side Key. Are you interacting with the phone in any way when it snoozes?
We've just tried this and it hasn't auto snoozed, @Maxvax. Please try your alarm with your phone set to Safe Mode. This will disable third party apps and if the alarm doesn't auto snooze during this, it indicates an app is causing the issue and we recommend deleting them one by one until you find the culprit. To do this, hold the Power button for a few seconds and then long tap on Power Off on the screen which will change to Safe Mode. Tap this to restart your phone in Safe Mode. Let us know your findings.
I can confirm this issue on my s10e. It happens every single morning without exception. I've never heard my entire alarm all-the-way-through (a 4-minute mp3 fiile).
I have Bixby disabled. Airplane made doesn't resolve the issue either. It's perfectly consistent so it must be a bug. Didn't happen on any previous Android phones. Must be a bug in Samsung's version of the clock app.
My S9 alarm used to work, but since the last uprgade it goes directly to SNOOZE and neve actually rings. I never touch it.
@Glo99: Can you try heading to the Clock app > Alarm > Select your alarm > Snooze, and toggle this option off, then on again. I'd also suggest adjusting the snooze Interval and Repeat options to see if you notice a difference. If the problem persists, go back to the Alarm landing page > Tap the 3 dots in the top right > Delete > Select your alarm > Delete, then set it back up again via the '+' symbol in the top right. Let me know how you get on.
Thanks , that was one of the things I tried, in the end, I have given up and installed the Alarm widget, which does not have an issue . The alarm actually works now.