Wrong indication of hourly alert.

I have found in versions 9.91 and 9.94, that when I check the hourly alert setting, it is everytime "OFF", regardless of real status:

hold SET - Alerts - GPS - Hourly

When I set it "ON", it is really on, but next time I check the status, it is indicated "OFF".

Can somebody please check it, if this is my problem or firmware bug?