How to reproduce :

• Set a new calendar service in the homepage,
• Add a remote calendar with an external ics dataset (ex.: https://www.data.gouv.fr/api/1/datasets/r/15366b3e-70ec-4fe5-8ed4-2cd6cf28b38b)
• Choose view "Petit calendrier"

Results shows inconsistency with start date and end date and also graphic issue