Page 1 can be opened correctly. Page 2 causes the Imaging Server to jump to 99% CPU usage and will eventually crash. Either a timeout or a rendering error occurs.

Each Imaging Server has a settings file that is located in C:\Program Files\DocuWare\Imaging Server\Instances
The name of this file is “<GUID>.settings”, where <GUID> is the GUID of the Imaging Server
Within this file there is a section  <appSettings>
Add following line in this section, another rendering toolkit is used then and it should work afterwards

<add key="UseTallComponents" value="on" />