Csak úgy mutatom, kidobhattad volna már az androidot is sokszor hasonló hiba miatt, pl:
How to fix the Android alarm clock bug so you wake up on time
Van hozzá szép Reddit thread is, csak egy pár idézet:
"This isn't the first time the clock app's alarm function stopped working. I lost a job several years ago because of this shit."
"Happened to me. Galaxy S10. I had installed the Google Clock app from the play store. Going back to the Samsung clock."
"I end up setting up an alarm on my iPhone in parallel, which then lead me to catch the Pixel on the spot for missing the alarm...repeatedly. I did clear storage/cache and reset several times but the issue is still there."
"Happens on my OnePlus with the default alarm app, I had to download the ad version of alarmy app on the play store and it never happened again"