I have made line types with text and need to reverse the direction that the text reads. The text autocorrects based on UCS north. The UCS in the drawing is rotated 90 degrees so line text reads upside down. I type in the reverse command but the text does not change.
All kinds of weird things happen when you rotated your UCS, In fact it is best to alway keep the UCS in the World System. I will usually save a view for working on things in the rotated ucs, but then set the drawing back to world afterward.
See if by setting the UCS to World - the command does not work as expected.