Screen off memo not working...

[Server]

My ability to use screen off memo disappeared on my Note 9.  Popping spen

out does not trigger the memo function 

Can't figure out why but if anyone has any suggestions it would be appreciated. 

Tia

[Server]

the mystery continues... I have all permissions checked and allowed and cleared cache multiples times. this community is great but I think I may have stumped the elders on here. I'm not giving up but I can't think if anything else. the only link was changing cases because it broke. yes clear view cover is what I meant. still researching. may have to try safe mode in case a rogue app is blocking this native function. once again, thanks to everyone.

[Tallman]

This is strange. Last thing to do if nothing work. Backup entire phone and do a factory reset.

[nagymohyrizk]

Thank u .I had same issue.i followed your instruction .toggle on ( appera on top ) for S.NOTE..the  issue is then  solved. Screen off memmo worked back again.

[Jakes1]

I had the same problem. Resolved it by doing the following :

*Settings 

*Apps

*Special access

*Appear on top

*Toggle on Samsung notes

Should solve the problem 

[Lilo01]

Thanks, it's the best answer. It worked.

[Server]

yeah I figured. but I need to confirm if it's software or hardware first. the fact that s-pen is fully functional tells me most likely a software anomaly. but my case broke when I dropped it and the spen flew out like a dart. i never tested screen off memo at that instance to make sure all was fine. until I installed my rhino case I then noticed screen off memo wasnt working.

[mytech]

Have you updated lately?
Have you restarted lately?

I'd toggle screen memo off, restart, toggle it on and try it.
Before a factory reset maybe go into safe mode and wipe cache. Iknow it seems redundant to wiping data and cache of notes but maybe some settings just don't wanna dance together until they get a wipe of cache in safe mode drink.

[Vic20]

As @mytech stated, try to disable, reboot and enable again. Try clearing cache partition in recovery. Test to see if the S Pen is actually working. Either in Members app or dialing *#0*# in the phone keypad. Boot into safe mode and test. As last resort, factory reset. BUT do a backup first as this will wipe everything and start fresh.

[mytech]

Nice 1!

[Server]

so I've toggled S.O.M and rebooted and tested. then i toggled back on and tested. nothing. when I withdraw spen the sound is there but nothing happens. nothing changed software wise other than app updates. spen test in dev mode passed. just the SOM is not triggered. going to wipe system cache and test again.