Changing start time doesn't change calculated values

[isti03]

When in 'Fit the daylight' mode changing the start time of the wallpaper doesn't immediately change the calculated timing of the images (the ones that say 'This picture lasts from ... to ...' ). If I uncheck and recheck the 'Fit the daylight' toggle, it works fine, but it should be automatically recalculated when changing the start time in my opinion.