Unreal Engine Issues
Unreal Engine Issues
[AI] Navigation System can be constructed in situations where the NavigationObjectRepository subsystem is not valid
UE - AI - Navigation - Feb 7, 2025Investigate and fix all calls where the Navigation System is constructed without the NavigationObjectRepository subsystem being valid. ...
setting Simulate Physics and Set Actor Location And Rotation in code causes crash on project load
UE - Gameplay - Feb 19, 2015If an actor's Simulate Physics and ActorLocation/Rotation properties are set in code the editor will crash immediately upon launch / debug in VS. ...
Animation Rate Scale does not appear to have an affect when blending an animation with two different Rate Scales
OLD - Anim - Dec 14, 2018Rate Scale does not appear to have an effect when using a blend space that blends an animation with two separate Rate scales. ...
[CrashReport] Crash on Linux - llvm::MachineFunctionPass::runOnFunction()
UE - Platform - Linux - Jun 16, 2017This is a top community crash occurring on Linux. A log file is attached. Additional information is currently unavailable. ...
Subtracting .2 from a float produces a floating point error
UE - Gameplay - Blueprint - Feb 1, 2016Subtracting .2 from a float seems to produce a float error, registering incorrect values during if checks. ...
Niagara crash when using a particle attribute reader that has been passed around between modules
UE - Niagara - Oct 28, 2025The following Niagara usage pattern results in either a crash or in incorrect data being read from a Particle Attribute Reader: Emitter Spawn Stage – A module has an Attribute Reader input specifie ...
Camera Shakes with Oscillation Blend Out Time do not play for their full duration in Sequencer
UE - Anim - Sequencer - Sep 20, 2019Camera shake oscillations with blend out time do not play their full duration in sequencer. ...
Cook errors with landscape cross-level spline meshes
UE - LD & Modeling - Terrain - Landscape - Dec 18, 2015Licensee is using a modified engine but has a workaround, we need to verify that the same doesn't happen in vanilla UE4 and fix if it does. ...
T_Wood_Pine_D Asset has Offset Alpha Channel
Docs - Samples - Sep 12, 2016The alpha channel seems to be offset in the x and y by 1024 pixels this has been fixed and attached for analysis. ...
IKRetargeting Skeletal Mesh Does Not Update Virtual Bones
UE - Anim - Rigging - Retargeting - May 20, 2022Occurs 5/5 times. Regression does not occur: UE5Manny Skeletons are new to UE5.0 ...