@Scott Beeson, Thanks for posting in Q&A.
From your description, I know that you encountered an issue that Default Device Compliance Policy showed error.
I know you don't have any compliance policies in Intune portal, and you have set up to Mark devices with no compliance policy assigned as "Compliant". It is possible that your device has exceeded the time period for reporting the status of all received compliance policies to Intune and did not receive any compliance policies during the period, thus, it displays the "Has a compliance policy assigned" error message while the device is still showing compliance.
To resolve this issue, you can assign a compliance policy to the target device and sync the device with Intune.
Please try above information, if there is any update, feel free to contact me.
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