Hi Mark,
Thank you so much for clarifying. This particular issue is associated with the Acrobat Reader application, and is not caused by a fault or software issue associated with the docking station or the connected display. It is also a known issue by adobe, and they have attempted to resolve the issue in their 11.0.14v update. If you take a look at this forum thread (https://forums.adobe.com/thread/1474662) does this issue look similar to your own? Have you updated Adobe Acrobat recently?
Thank you for your patience,
Marc
Product Owner & Technical Support
www.plugable.com/support