Likewise Jeremy, I'm sure we'll get to the bottom of these.
For the missing content and corrupted content: when the defect is visible on the display, could you please use Print Screen and paste the content on Paint (or anything else)?
Is the defect visible in the Print Screen? If so, then the pixels are wrong well before they are handed over to the DisplayLink driver.
The Print Screen doesn't actually capture what is being displayed, but what is being computed at an earlier stage.
If you see the corruption, then you could try by using more recent graphics drivers. The ones you are running are from September 2016, so not long after Windows 10 Anniversary Update was released.
The latest driver for your plaftorm is
Intel graphics driver 4627 (you are running 4531). Please note that the EXE version will probably not work on your Dell if this particular version wasn't accepted by them. To go round this,
use the ZIP version through Device Manager.
Strictly speaking the driver you use is not very old but the graphics subsystem changed in Windows 10 Anniversary Update to allow native OS support of indirect displays like DisplayLink technology (we co-developed that with Microsoft). Drivers released before or shortly after the Windows 10 Anniversary Update RTM date are more likely to not implement something properly...
But I do know there is an OS bug fixed in later OS builds so unless you use the Windows 10 Creators Update, you can be sure it's there, waiting to be visible! The resize was working each time for me though so you might have something else.
I don't know about resetting issues on the Ethernet driver and Microsoft hasn't flagged this to us either (telemetry). I will look at the logs.