No Internet using tethering and Wi-Fi dongle

This morning we lost the Internet connection on our Windows 10 v1909 computers using a LAN cable connection.

So I bust out my handy dandy USB Wi-Fi dongles in order to connect to my phone’s tethering.

Previously once I had joined the tethering’s Wi-Fi signal, I got Internet service straight away.

However despite it showing that I was connected to the Wi-Fi, I couldn’t get any Internet connection.
I tried rebooting my confuser and also the dongle but still no Internet.
I whipped out my tablet and used It to test the tethering and it got Internet with no problem.

The only way to get the Internet working using the dongle, was to disable the LAN network adapter!

This is a new situation and maybe a Windows 10 bug.