Unreal Engine Issues
Unreal Engine Issues
Inversing the scale of a skeletal mesh when it's simulating physics results in the mesh and collision being flipped
UE - Simulation - Core - Mar 18, 2021The attached project has 3 skeletal meshes. One with its original transform and then 2 copies with an inversed scale in the X axis for one and the Y axis for the other. When pressing play, the meshe ...
Linked Anim Layer node can become stuck in a single state when attempting to change the Layer
UE - Anim - Runtime - Anim Blueprints - Oct 25, 2022When swapping Layer settings between various Animation Layers on a Linked Anim Layer node, the node can become stuck in one state. The node will become stuck in the Linked Anim Layer state and canno ...
Blueprint debugger: variable getter node displays wrong object's value
UE - Framework - Blueprint Runtime - Jul 28, 2023After triggering a breakpoint in blueprint, variable getter nodes can display the value of a different object than the node's target. For example: if an actor class has a value MyBool and the bluepr ...
Keying Level Sequence Crashes Engine
UE - Anim - Sequencer - Dec 12, 2024Repro rate 3/5 Regression to be tested Testing with a fresh level sequence no crash occurs, Tried to do it without rekeying and did not get a crash. I repro'd it a few times and sometimes no crash ...
Niagara Data Interface "Errors and Warning" section on Module Details not updating when error messages change
UE - Niagara - Aug 14, 2025This is a regression: it worked correctly up to UE 5.5, but not in 5.6 or mainline latest. Possibly caused by CL 40093049. Class UNiagaraDataInterface provides virtual method GetFeedback(), which a ...
Using Execute Console Command in a custom Game Instance causes Standalone Game to crash
UE - Gameplay - Blueprint - Jan 15, 2015Using Execute Console Command in a custom Game Instance causes Standalone Game to crash. Also occurs in 4.6.1: CL-2386410 and 4.7 Preview: CL-2403078 Crash Report: [Link Removed] Call Stack:UE4Ed ...
Set Text Render Color registers max value instead of actual value from random floats
UE - Gameplay - Blueprint - Nov 5, 2014When attempting to change the value of set text render color to a random value, the node will only register the maximum value in the range. ...
"Get Positional Tracking Camera Parameters" node does not return the correct values.
UE - Platform - XR - Dec 2, 2014When Using "Get Positional Tracking Camera Parameters" node it does not return the values for the pitch and roll of the camera. Also it only gives the yaw if the mouse is moved. ...
Match3 crashes on device after locking and unlocking the screen on iOS
Tools - Aug 23, 2016Aug 23 15:25:15 A6240 UnrealMatch3[987] <Warning>: Assertion failed: CommandEncoder.IsRenderPassDescriptorValid() [Link Removed] [Line: 700] Match3 does not resume after locking and unlocking the s ...
FArchive broke operator<< for bool in Editor builds
UE - Foundation - Core - Feb 16, 2017Looks like CL-3215392 added changes in FArchive where the operator<< method for bool is a member operator in Editor (as opposed to a global operator in non-editor and old builds). This causes shado ...