Unreal Engine Issues
Unreal Engine Issues
Spring Arm Component attached to a Vehicle in a multiplayer environment will cause the Vehicle to jerk forward and backwards
UE - Networking - Aug 11, 2016Spring Arm Component causes vehicle to jerk forward and backwards in a multiplayer environment. ...
Control Rig parameters don't function in the AnimBP after the Editor restarts
UE - Anim - Rigging - Control Rig - Jun 14, 2020Control Rig parameters don't function after editor restarts. Also the default values don't function and you need to use an input instead of directly editing the values of the pins. You can work aro ...
"Out of video memory" crash when attempting to save many assets with source control enabled
UE - Graphics Features - Sep 25, 2020This will only repro when connected to source control ...
Blueprint class's property is overridden by parent blueprint class
UE - Gameplay - Components - Nov 2, 2020I did some research. The problem is caused in CoreNative.cpp. In Function GetInstancedSubobject (Line 126) We should check if instance is runtime instance first. If it is runtime instance, just us ...
Scroll Box Dragged State Persists After Input Mode Change
UE - Editor - UI Systems - Slate - Oct 31, 2024This is an edge case occurring when changing Input Mode while the Scroll Box is being dragged. When the Input Mode switches to Game Only, further drag actions are no longer possible. However, becaus ...
UWorldPartitionSubsystem::IsStreamingCompleted returning the wrong query result when all cells and actors in location are in DataLayers
UE - World Creation - Worldbuilding Tools - World Partition - Jul 24, 2025Context: Data Layers is a system within World Partition used to organize Actors both in the Editor and at runtime. It allows for the user to dynamically load and unload layers in the Editor to help ...
Nodes impacted by code changes do not generate warnings after HotReload
UE - Gameplay - Blueprint - Oct 20, 2016I noticed this while executing https://jira.it.epicgames.net/browse/UEQATC-1441. At step 10, there should be warnings on the nodes that were updated by the HotReload. This is a regression from 4.13 ...
GPU Particle Collision causes shaking when set to bounce with low resilience.
UE - Niagara - Jul 27, 2016A particle emitter with GPU sprites on certain settings will shake violently as they collide with the ground. This requires there to be a strong Const Acceleration module and Collision with low resi ...
Modifying ShooterGame header file for faster compiling causes crash behavior.
UE - Foundation - Core - Jan 11, 2019Using bFasterWithoutUnity and MinFilesUsingPrecompiledHeaderOverride, on ShooterGame.Build.Cs results in Engine crash. ...
ObjectPivotPoint does not work with instanced Nanite meshes
UE - Rendering Architecture - Materials - Nov 17, 2022Regression: Nanite Foliage is a new feature in 5.1, so this issue is not reproduceable in 5.0. Notes about this new support can be found under Nanite Improvements in https://docs.unrealengine.com/5. ...