Unreal Engine Issues
Unreal Engine Issues
Toggling SetSimulatePhysics state on a Primitive component with a child PrimitiveComponent leaks PxShapes
UE - Simulation - Physics - May 23, 2016FBodyInstance::Weld did not check to see whether or not child components were already welded to a parent. This meant that whenever Weld was called, ShapeToBodiesMap would continue to grow in size, e ...
[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. ...
Alpha channel is not working on drag and drop function
Tools - Nov 5, 2014When using the drag and drop function in UMG on an image with an alpha map the background will show up as black instead of translucent. ...
Actor Component properties can become "linked" across multiple Blueprints after a hot reload
UE - Gameplay - Components - Dec 3, 2018If code in an Actor Component class is changed (eg. a new UPROPERTY is added) and a hot reload is performed to implement the changes, the properties in the component can become linked across any Blu ...
Difference in LODs between PIE and editor
UE - Rendering Architecture - Dec 7, 2023It is possible to repo this without the exact steps, but that leaves it ambiguous if the camera moved when exiting PIE or not. ...
Anim notify issue with root motion replication
UE - Anim - Runtime - Jul 9, 2019https://udn.unrealengine.com/questions/510965/view.html ...
/std:c++17 key is hidden in generated .vcxproj after adding it to the BuildConfiguration.xml
UE - Foundation - Cpp Tools - Dec 10, 2021As far as I can tell this is a regression. After including C++17 in the build configuration it shouldn't be hidden in the .vcxproj? ...
Linked animation graph doesn't trigger anim notifications on dedicated server.
OLD - Anim - Jun 15, 2020Linked animation graph doesn't trigger anim notifications on dedicated server. There is no expected message in log: LogBlueprintUserMessages: [HitReact_AnimBP_C_0] Client 0: HitNotify IsServer: tru ...
Maximum number of State Machine connections?
OLD - Anim - Mar 16, 2015Adding more than 8 connections to or from a state in the state machine results in unpredictable behavior, like causing an animation to fail. (See image.) Was able to reproduce with user's test file ...
Crash on Unreal Editor Exit due to subclass of UEditorUtilitySubsystem
UE - Editor - UI Systems - UMG - Jun 18, 2024Since UE5.4, it has been reported that if there's a class derived from UEditorUtilitySubsystem, the program crashes when the editor exits. This is because the code added in CL30853505 accesses freed ...