I’m reporting your reply here for reference to other users:
Thank you so much for reaching back out to us, and running our PlugDebug application and sending over the output. Based on the log files, the problem may be related to the individual graphics card version your system has, and the GPUSwitch that occurs when the system is asleep. Based on the information you supplied, the problem only occurs when the system is slept or locked, and then is waken. What could be occurring is the system is attempting to “switch” the GPU once it is asleep, which is causing the display to disconnect, and then not properly send the EDID information associated with the resolution you have the external display set to. If you set the resolution on the display to 1920 x 1080, and then utilize the dock normally, does the same issue occur?
What types of applications were you utilizing before each of these issues started to occur?
I tested setting the display resolution, and the problem remains. The example I provided you follows a fresh plug-in of the dock with basically no applications running other than a browser (you can check that on the logs provided).