A71 timer issue after Android 11 update

[BigBazz42]

Following the recent Android 11/One UI 3.1 upgrade, I've found that the timer on my A71 doesn't bring up the notification or sound until around 30 seconds after it expires. Has anyone else experienced this at all?

Specific build information is as follows:

Baseband: A715FXXU3BUB4
Kernel: 4.14.190-20973144-abA715FXXU3BUB5
Build: RP1A.200720.012.A715FXXU3BUB5
Samsung Clock v12.0.05.7