Default Calendar module shows wrong time format

[Alvinger]

I have a problem with the default calendar module. I am trying to show the kids’ school calendars with absolute starting and ending times. However, once a class has started the view changes to a relative starting time (but the information is relative to the ending time…) and an absolute ending time.

This is the mirror display: (“Slutar 12 minuter” means “Ending in 12 minutes”, the screenshot was taken 13.18)

And this is the corresponding config.js entry:

                       module: "calendar",
                        position: "bottom_left",
                        header: "Schema",
                        classes: "vardagsmorgon",
                        config: {
                                maximumNumberOfDays: 2,
                                maximumEntries: 7,
                                dateFormat: "ddd HH.mm",
                                dateEndFormat: "HH.mm",
                                showEnd: true,
                                timeFormat: "absolute",
                                getRelative: 0,
                                fade: false,
                                displaySymbol: false,
                                calendars: [
                                        {
                                                symbol: "calendar-o ",
                                                url: "..."
                                        },

What am I doing wrong? Or is this a bug within the calendar module?