Unreal Engine Issues
Unreal Engine Issues
Pawn Velocity dramatically different on server and client with Client Authoritative Position
UE - Gameplay - Sep 28, 2018The server is not seeing the correct walking animations on each of the clients and after doing some digging, we found that the Pawn->GetVelocity() function is returning something drastically smaller ...
Rect light LTC textures fail to load when cooking with bSharedLinearTextureEncoding enabled
UE - Texture - Apr 2, 2025When running a build with bSharedLinearTextureEncoding enabled, View.GGXLTCMatTexture and View.GGXLTCAmpTexture are pointing at the black texture fallback, which affects correctness of rect lighting ...
Vector VM - Crash / memory stomp when using > 255 external function calls
UE - Niagara - Aug 12, 2025The Vector VM has only every supported a byte's worth of external function calls, when we blew the limit it would index into the incorrect VM call. The new VM will also overwrite memory when exceed ...
STileView EventOnListItemObjectSet function is not called if the TileView items are cleared and then the same exact items are re-added
UE - Editor - UI Systems - UMG - Sep 6, 2022Result: In UMG_TileViewItem, EventOnListItemObjectSet function Trigger once Expected Results： EventOnListItemObjectSet function Trigger twice ...
Crash Occurs When Creating a Blueprint From a Nav Link Proxy
UE - Gameplay - Blueprint - Sep 27, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...
GetHMDDeviceName function's name is no longer accurate, is confusing
UE - Platform - XR - May 30, 2018UHeadMountedDisplayFunctionLibrary::GetHMDDeviceName() says it returns the "device" you are using, but it really returns the name of the SDK or XR System that you are using (for example launching o ...
Can't run sequener_anim_examples.py due to indentation error
UE - Anim - Sequencer - Feb 10, 2021This file has inconsistent indentation, with two tabs in the first line of code and one everywhere else. ...
Disabling Disregard for GC with an invalid asset in GameplayTagTableList causes a controlled crash
UE - CoreTech - UObject - Jul 31, 2024Disabling Disregard for GC leads to a crash in GarbageCollectionVerification.cpp VerifyObjectFlags. This crash occurs when there is an invalid path specified in GameplayTagTableList. The cause of t ...
Splitting Transform in Collapsed Graph Crashes UE4
UE - Gameplay - Blueprint - Feb 10, 2017Splitting Transform in Collapsed Graph Crashes UE4. When this is done the editor crashes and that actor can no longer be opened without causing a crash. ...
PerInstanceRandom does not work on Instanced Static Meshes spawned at runtime
UE - Graphics Features - Aug 11, 2017PerInstanceRandom does not provide a random value when the material is being used on an Instanced Static Mesh that is spawned at runtime, the value is always the same. Regression?: Yes This did not ...