At the Timesheet time entries weekly view (it is not possible to see it daily) by default (and each time you change the view to Timesheet for instance) all the past days are fully displayed, despite you manually collapsed all them before. Most of the times you access that view is for checking current day tracking and you have to manually collapse all the past days. It would be really helpful to allow keeping past days collapsed by default or to have a daily view to allow focusing only on the current day.