This is very easy to reproduce. Create new app with one form. Put TAdvLockApp component to the form.
Set IdleSeconds 30 and enabled=true. Create 2 labels:
OnUnlock set
Label2.Caption:='unlocked:'+timetostr(now);
OnLOck set
Label1.Caption:='locked:'+timetostr(now);
OnIdle set
Caption:='Idle:'+timetostr(now);
Run the app wait 30 sec it goes locked, unlock it, Then keep moving (or resizing) the window during the next 30-40 sec and it is locked: AND there is not 30 sec from the last movement !