Calendar buttons in Service or Host Availability Report for Report period "Custom" do not work

[Mac-Dui]

If you click on the calendar buttons in the Service or Host Availability Report (when choosing Report period "Custom") then nothing happens. One would expect a popup calendar.

Thruk Version
Tested with Thruk Thruk 3.04 (OMD 5.10-labs-edition and 5.20-labs-edition).

To Reproduce
While on the host details page click on "View Availability Report For This Host". Then choose "Custom" under "Report period". "Start" and "End" fields appear with a calendar image next to it. However nothing happens when clicking on it.

Expected behavior
One would expect a popup calendar.

Screenshots

Desktop (please complete the following information):
Tested with Google Chrome Version 117.0.5938.92