Since upgrading ZCM 11.2.3 --> 11.3.0 --> 11.4.0 --> 11.4.1 I can no longer move either bundle, device or policy objects around in the ZCC.

Edit actions to Rename, Copy or Copy System Requirements work perfectly fine, but when I select an object and go to Edit / Move, absolutely nothing happens.
I've tried different web browsers, different login IDs (all with Super Administrator rights) and connected to different primary servers (hosted on SLES and Windows), but still no joy.

Any ideas?