Yeah !!! Sorry for my enthusiasm but someone else finally have the same issue as I do.
I have an open case regarding this since months (but I am on 8204) and no resolution yet.
You will probably have the same issue with Edge or any other "modern" browser.
Look at the developer tool (F12) and you will probably see a "Failed to load resource" and a javascript module not defined
The module exist but cannot be accessed.
Do you pass by IIS to secure your system ?
If you bypass IIS and run directly without security, it will probably work.
It seems to be an issue between IIS and Tomcat.
I suggest that you open a case a mention case 200121110.
Maybe it will help both of us to resolve this.
WF versions : Prod 8.2.04M gen 33, Dev 8.2.04M gen 33, OS : Windows, DB : MSSQL, Outputs : HTML, Excel, PDF
In Focus since 2007