Venu 4 starting function onEnterSleep() in watchface view after 10s instead of 15s (if 15s is selected on Venu4 device)

In watchface view the function onEnterSleep() is started after 10s if 15s limit is selected on Venu 4 (settings -> display -> time limit). Seems to be, the function is started 5s too early by system.

This is leading to watchfaces showing sleep mode for 5 seconds. This is confusing users.

SW 14.12 (Venu 4)