This started with the recent driver update: Intel Corporation - Display - 18.104.22.16880
I went into Device Manager -> Display Adapters, right-clicked on Intel(R) Iris(R) Plus Graphics, and clicked on Uninstall Device. The screen will go into a default 4K driver which will make everything look tiny. Just go to Display Settings (right click on desktop) and set the scale to something that allows you to see things a little better (200%+).
Back in Device Manager, select Action -> Scan for hardware Changes and it will find the old driver (22.214.171.12410). All is back to normal now.
Lo and behold, later in the day, I get prompted to update to the same Intel Display driver ... again. I couldn't opt to decline it so I let it continue with the install. This time, it worked just fine. There was another update included this time though: an HP firmware update. I'm not sure if that's what made a difference.
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