LineColor Node???

This is a strange one.
In Fusion, when I either click on Background to add a background node OR manually add it, the node that is added is called LineColor. If you search, you will not find a tool called LineColor.
I rebooted. Same thing.
I tried various other projects. Same thing.
It is totally bizarre!!
When the LineColor node is added, the background it White. See attached.
Any ideas on what happened and what are the next steps?

Somehow...and I have no way of knowing how, your Background tool has been renamed as 'LineColor' and then saved as Default.
Simple fix is just rename it back again as Background and save as default once more.

Update:
In order to correct this issue, I did a clean uninstall and a reinstall. Actually, I first tried the DR uninstall and that did not fix the problem. I then manually deleted the Blackmagic and DR application folders and Cache folders.

Drag the effect into a composition, rename the node to "Background".
Right-click the node > Settings > Reset Default
Right-click the node > Settings > Save Default