Sequencer Track Cut & Paste Crashes Editor

4.18p4

Use the provided BugDemoV8 project for faster demonstration.

  1. Open Sequence.
  2. On the PostProcessVolume item use the + button and Add a “Blend Radius” Track.
  3. Select the new “Blend Radius” Track, Ctrl-X & Ctrl-P will Crash the Editor.

Note after the Ctrl-X/Cut command, the parent PostProcessVolume item is no longer selected, so there is no destination for the Paste. However, some Tracks such as Visibility, Paste to the root without a crash. Most Tracks do crash.

Sequencer should check for empty Paste selection not to bring down the Editor so easily.

The keyboard focus is generally quite erratic in UE. This crash can easily be triggered, with Ctrl-X an P unintentionally sent to the Sequencer. Even using the Sequencer toolbar can steal the keyboard focus, so basic keyboard commands, like Spacebar for Play will become disabled quite often. Editing a property in Details panel will steal the focus frequently, needing a click back in the Sequencer or Cinematic Viewport just to use the Spacebar Play/Pause again. Play/Transport keyboard commands are critical with Animation/Music editing software, so all these extra clicks are unusual and unprofessional. There should be some global key modes that are sent to the Sequencer, if not consumed by a text field, etc. The numeric fields should also implement the mouse wheel for faster adjustments. I should probably post these suggestions separately.

Hello Büke,

I was able to reproduce the crash reported above. I have written up a report and I have submitted it to the developers for further consideration. I have provided a link to the public tracker. Please feel free to use the link provided for future updates.

Link: Unreal Engine Issues and Bug Tracker (UE-51713)

Make it a great day

Thank you.