Rotated component made into root displays incorrectly in the blueprint editor. Closing and reopening the BP editor corrects the displayed root component.
1. Open a new Blank project
2. Create an actor class BP & open it
3. Add a Cube component
4. In the Details panel, set one of the Rotation values to 45
5. Compile & save
6. In the Components tab, drag the Cube onto the Root so it becomes the new root
7. Compile & save
8. Back in the editor, drag the actor into the level
Results: The actor that is dragged into the level and the thumbnail are both the 'unrotated' actor (which is expected), but the BP editor will still show the Root Component as rotated.
Closing and reopening the BP editor corrects the displayed root component.
Expected: On the compile after the Cube is made into the root, for the component in the BP editor to reset back to it's original 'unrotated' state
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-41109 in the post.