Summary
n Unreal Engine 5.6, when a Cine Camera Actor is attached to a Camera Rig Rail, its position does not update in real-time in the viewport while adjusting the Current Position on Rail value.
The camera only updates its location after releasing the slider or forcing a redraw.
This happens even with:
Lumen enabled and Path Tracing disabled
Viewport set to Realtime
“Cine Camera Rig Rail” or “Camera Rig Rail” used
Reattaching or recreating the camera
Please select what you are reporting on:
Verse
What Type of Bug are you experiencing?
Other
Steps to Reproduce
Open a new level in UE 5.6.
Add a Camera Rig Rail or Cine Camera Rig Rail.
Add a Cine Camera Actor and attach it to the rail.
Select the rail and try adjusting the Current Position on Rail via Details panel.
Observe that the camera does not update its position in the viewport in real time.
Expected Result
The Cine Camera Actor should follow the rail and update in real time as the position value changes (as it did in earlier versions, or as seen in Sequencer playback).
Observed Result
The camera remains static during slider movement. It only updates after releasing the mouse or triggering a manual redraw.
Platform(s)
Unreal Engine Version: 5.6.0
Rendering: Lumen, Path Tracing OFF
Viewport: Realtime ON
Platform: (PC / Windows 10/11 or macOS, specific GPU/CPU info if available)
Reproducible in new blank project: Yes
Video
Additional Notes
I would appreciate any confirmation if this is a known regression or if there’s a workaround other than updating manually via Blueprints or Sequencer. Thank you!
