How to customize calendar info

[hansfrap]

Description
I continue have troubles with setting working time in the dialog: Change Working Time
In dialogue: Change Working Time I can use: Options... . After this I go to Calendar options for this project.
I can adjust the Start-time, End-time, etc. there.
If I change this to Start time to 8:00 end time to 20:00, I expect to see these times in my dialogue: Change Working Time

Problem
In the dialogue: Change Working Time, the time At Calendar Standard remains at 8:00 to 12:00 and 13:00 to 17:00.
I would like to see this adjusted to my set settings.

Question
How do I get that Standard time presentation adjusted?
Or: Why are these times not adjusted?