When you have the mouse cursor set to show in game, if you use shift+f1 to unlock the mouse, eject, and then attempt to click and move an actor using the transform gizmo, you are unable to do so.
Setting Show Mouse Cursor to false in the player controller seems to fix this issue.
This does not seem to occur in 4.10.4 binary. This is a regression.
Found in 4.11 Preview 8 binary and Main CL 2925606
1. Open the editor (ThirdPerson Template)
2. Create a new Player Controller bp
3. Enable Show Mouse Cursor
4. Go into your game mode blueprint and set the Default Player Controller as the one you created in step 2.
5. PIE
6. Press Shift+F1 to unlock the cursor
7. Press the Eject Button
8. Click on an actor in the scene (ramp, cube, etc) and attempt to move it.
Result: The hand cursor freezes on the transform gizmo and the actor cannot be moved.
Expected: You would be able to successfully move actors in the scene while ejected with mouse cursor shown.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-28955 in the post.