Calendar does not show up while trying to schedule publication for document

In Hippo 12.2.0 while we are trying to schedule a publication of a document we are not getting calendar view and nothing happens when we click on the icon. 

The error we are getting in the console of the browser is:

Wicket.Ajax: Wicket.Ajax.Call.processEvaluation: Exception evaluating javascript: TypeError: Cannot set property 'dpJs' of null, text: (function(){var element = document.getElementById("id221");

We are in discussion with Jeroen Hoffman from the Bloomreach team who confirms this is a bug.