Assert in MoviewPipelinePIEExecutor when cancelling movie scenes during rendering

UE - Anim - Sequencer - MRQ - Sep 11, 2024

When rendering a single Level Sequence with MRQ, removing the Level Sequence that is actively rendering will create an array out of bounds exception. Also confirmed in //UE5/Main, CL: 36086643 ...

In Vehicle sims, CenterOfMass override isn't factored into UpdateMassProperties

UE - Simulation - Physics - Mar 24, 2025

Origin from this UDN ticket, https://udn.unrealengine.com/s/question/0D5QP00000sGtbO0AS/chaosvehiclemovementcomponent-intertia-tensor-isnt-adjusted-for-center-of-mass-override?fromCase=1 TLDR is th ...

Level editor viewports crash when deleting actors after a layout change

UE - Editor - Workflow Systems - Apr 18, 2022

Reported by a customer while testing USD import. See additional URL ...

AddActorWorldOffset offsets character blueprints faster than other actors

UE - Gameplay - Feb 22, 2016

AddActorWorldOffset offsets character blueprints faster than other actors when the character is possessed or anytime after possession/ejection has occurred. ...

Setting Runtime Generation to Static Resets Upon Closing and Re-opening Editor

UE - AI - Nov 23, 2015

In Project Settings>Navigation Mesh, setting the Runtime Generation context menu to static reverts to dynamic if the project is saved, closed, and reopened. ...

Deleting Texture 2D asset generated after saving a level in a project with Generate Mesh Distance Fields deleted .umap file

UE - Graphics Features - Oct 16, 2015

If "Generate Mesh Distance Fields" is active within the project settings of a project, the .umap of a level will be deleted if a landscape is created and the level is saved, then the 2D texture that ...

Edge Screen Artifacts when calling Widget Blueprints to the Viewport and toggling Fullscreen Mode

UE - Editor - UI Systems - Apr 6, 2016

Widgets called to the Viewport with Fullscreen enabled, will eventually cause artifacts to appear on the edges/borders of the screen. There is currently a forums post with multiple users reporting ...

Exporting an Uncompressed AVI Movie from Matinee creates Incorrect Alpha Channel

Tools - Nov 23, 2015

When creating an uncompressed AVI movie from Matinee, the final video is darker than what is previewed in the editor. I was able to narrow it down to the compression as the cause of the issue. The ...

Montage keyframes calculation error

OLD - Anim - Apr 28, 2016

Animations are not showing proper length when converted to Montage. Up to 98 frames (AFAIK) when converted to Montage, the Montage will show the correct number of keys. However, a 100-frame anima ...

Player input on the Client while Ejected during PIE will show on the Server (Editor) viewport and not on the Client window

Tools - Jul 17, 2015

Player input on the Client while Ejected during PIE will show on the Server (Editor) viewport and not on the Client window. Reproduced in 4.7.6 binary, 4.8.2 binary and Main (//depot/UE4/Promotable ...