Unknown Error when moving category below "Uncategorized"


When I organize my categories, enter the edit mode and try to move a category to the bottom of the list, below the "Uncategorized" category, I get an
"Unknown Error
The operation could not be completed due to an unknown error."
It doesn't seem to break anything, but that error handling could be improved.
Also, is there a reason why this error occurs? Why can "Uncategorized" not be moved away from the bottom of the list?

Pleco Version: 3.2.64
Android Version: 6.0.1
Device: Galaxy S5 mini SM-G800F


Staff member
Uncategorized is not actually a category - it's a special search for cards that aren't assigned to any category. So it's automatically put at the bottom and can't be moved.