Missing holidays in the calendar view

some holidays requests are not displayed on the calendar view
steps to reproduce :
1- Create a new request with the following informations :

• date Begin : choose one day of the previous week
• date End : choose one day of the next week

2- Click on save
3- Accept the request with an Admin account
4- Go to the Holiday Request Home
5- Click on the calendar button
You will see that the request is not displayed