Unreal Engine Issues
Unreal Engine Issues
Copy and paste State in the state machine do not correctly refresh synced objects when it have transition rule(fraction)
OLD - Anim - Apr 12, 2017Copy and Paste action in State machine do not generate correct info for "AnimGraphNode_SequencePlayer_20" Name for "AnimGraphNode_SequencePlayer_#" in the duplicated state is not changed to corresp ...
Actor being moved via sequencer has inherited velocity that ignores play rate scale
UE - Anim - Sequencer - Nov 8, 2019When an actor that can be stood on and jumped off of is moved in a sequencer it's inherited velocity doesn't scale with the Sequence play rate. If you jump in the opposite direction the cube is goin ...
GPU System will kill existing particles if activate is called after it has be deactivated
UE - Niagara - Oct 22, 2020Deactivating and then reactivating the same GPU system will cause existing particles to die. ...
Runtime Virtual Texture primitives set to never render to main pass still cause occlusion queries
UE - Graphics Features - Mar 23, 2021RVT only primitives are being pushed through the occlusion culling. It would be more efficient to not do that. ...
Pasting a component binding onto a Spawnable will not set up parenting correctly
UE - Anim - Sequencer - Aug 6, 2021It appears that for spawnable bindings, when adding a child binding through a copy/paste it is not added to the child bindings array on the spawnable, so when GetChildPossessables is called, there a ...
Ensure condition failed: bPlayingBackwards ? (CurrentPosition <= PreviousPosition) : (CurrentPosition >= PreviousPosition)
UE - Anim - Sequencer - May 10, 2022The problem is caused by the animation sequence playback position being set out of range from Sequencer. The call stack is : UE4Editor-AnimGraphRuntime.dll!FAnimSequencerInstanceProxy::UpdateAnim ...
Mesh Paint mode's Texture Paint has obvious artifact with UV seams
UE - Rendering Architecture - Oct 8, 2024Mesh Painting Texture Paint tool can miss some pixels along UV seams, even with "Enable Seam Painting" set to True. This appears to be because of the difference between rasterization and sampling. ...
LIVE: Multiplying an FQuat*FQuat via pass-by-value crashes editor on open
UE - Foundation - Core - Nov 5, 2014If a function takes in an FQuat value and then multiplies it by an FQuat, the project will build properly but then crash when trying to launch the project in the editor. Example project available b ...
Alpha Channel Created when 'Accumulator Includes Alpha' is Disabled in MRQ
UE - Anim - Sequencer - MRQ - Apr 12, 2022Occurs 3/3 times Alpha Channel Created when 'Accumulator Includes Alpha' is Disabled in MRQ issue discovered in LiveQA, and appears related to FORT-451157 Note: Whether 'Accumulator Includes Alpha ...
Layer's preview weight does not have an affect on the Preview Material for Landscape Layer Blend nodes
UE - Rendering Architecture - Materials - Apr 19, 2022Layer's preview weight does not have an affect on the Preview Material for Landscape Layer Blend nodes. Repro Rate: 3/3 Tested this in //UE4/Release-4.27 @ CL#18319896 and the preview window did g ...