Unreal Engine Issues
Unreal Engine Issues
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 ...
Some Niagara Fluid systems are not visible in a packaged project
UE - Niagara - Jun 7, 2022Previously packaging caused a crash with this system. This was fixed, but now the system is no longer visible when packaged. ...