Expected behavior When changing the selected month in the datepicker popup via the dropdown containing month names the selection should stay visible for user

Actual behavior When changing the selected month via dropdown it always displays the first month "January".

Resources (screenshots, code snippets etc.) In this demo page: https://ng-demo.mdbootstrap.com/forms/datepicker the bug affects all 3 of the date pickers. This is a GIF I created of the problem: https://gyazo.com/ab1095a4a2a5fadd849e9ca86ca55a52

In the documentation https://mdbootstrap.com/docs/angular/forms/date-picker/ the basic example works, so not sure what the difference is between those pages.