Unreal Engine Issues
Unreal Engine Issues
Playrate / slomo causes motion blur length to change incorrectly
UE - Graphics Features - Jun 16, 2017Discuss with the team what the actual desired behavior should be and adjust this calculation. This one is meant to stabilize the motion blur when we have a variable delta time but may be having kn ...
Crash when rendering cinematic in a Separate Process without "-NoLoadingScreen" cmd argument
UE - Anim - Sequencer - Jul 5, 2016Crash when rendering cinematic in a Separate Process without "-NoLoadingScreen" cmd argument. Occurs in 4.12 and 4.13 in both Matinee and Sequencer Error message: Assertion failed: SizeX > 0 && S ...
Preinfintiy and Postinfinity settings within the Curve Editor of an Animation can not be changed from Constant
UE - Anim - Runtime - Sep 7, 2022This is a regression tested in //UE4/Release-4.27 CL 18319896 Preinfintiy and Postinfinity settings within the Curve Editor of an Animation can not be changed from Constant. Either by right clickin ...
EXR renders won't go above 640x360 when rendering from an Editor Window
UE - Anim - Sequencer - Jan 4, 2016User was attempting to render out EXR sequences and ran into an issue where anything above 640x360 caused the window to shrink and render at a lower resolution. The workaround is to "Use Separate P ...
Blend weight of animations passed to notifies are incorrect
OLD - Anim - Jan 13, 2015It's currently not possible to prevent notifies from firing by setting their TriggerWeightThreshold. When stepping into the code that fires the notifies I found that the given InstanceWeight was alw ...
start/end state notify events can be sent every frame on dedicated server builds
UE - Anim - Gameplay - Aug 1, 2025The problem is that UCharacterMovementComponent::MoveAutonomous can tick the anim instance and dispatch notifies outside of the regular skeletal mesh component tick. But when MoveAutonomous calls T ...
[CrashReport] Assertion failed: SizeX <= GetMax2DTextureDimension() in d3d11texture.cpp
UE - Graphics Features - Aug 22, 2017This is a common and longstanding assertion that has occurred since at least the 4.13 release. User DescriptionsI was messing with a sequencer's camera settings (not playing back, but active) and c ...
Behavior of NewBinding and ExistingBinding are different inside Shot track
UE - Anim - Sequencer - Jul 6, 2018When using NewBinding, the bind does not work properly with the level sequence specified by ShotTrack. The cause is that Guid of ExistingBindingID will be empty when passing through ActorPicked in ...
FSoftObjectPath::ResolveObject references to the Editor's object in the first frame of Movie Render Queue
UE - Anim - Sequencer - MRQ - Dec 8, 2023When implementing a sequencer system that uses FSoftObjectPath to reference an actor placed in a level (at runtime, the corresponding actor is obtained by calling FSoftObjectPath::ResolveObject), Re ...
[CrashReport] UE4Editor_MovieSceneTools!FPropertySection::GetPropertyValue<float>() [propertysection.h:70]
UE - Anim - Sequencer - Sep 20, 2017This is a somewhat common crash in 4.17. Users have not provided any descriptions of their actions when the crash occurred. Source Context 58 /** Gets the current value of the property w ...