Unreal Engine Issues
Unreal Engine Issues
ServerTravel MapName?game=GameMode called on client connected to a host triggers check(Ret != EBrowseReturnVal::Pending) when Nativized Blueprint is on
UE - Networking - Aug 11, 2016When game is built with Nativize Blueprint and the client who is connected to a host tries to server travel along with the host, a assert is hit. ...
CopyTask in BuildGraph never throws an exception if the copy fails
Tech - BuildOps - Tools - Feb 28, 2023CopyFile function in CommandUtils.cs assumes that an exception will be thrown if the number of retries is exceeded, but the loop condition prevents it from being thrown. Following fix works:publics ...
Destructible mesh traces fail after switching collision response
UE - Simulation - Physics - Destruction - Jun 15, 2017User reported issue on UDN, steps above and project attached. ...
NPC - Initializing a System parameter to a Niagara Parameter Collection data interface parameter does not work
UE - Niagara - Jan 4, 2021Initializing a System parameter to a Niagara Parameter Collection data interface parameter does not work ...
Python function unreal.AssetRegistry.get_assets_by_class is broken
UE - Core - Systems - Nov 21, 2022Repro Rate: 3/3 This issue was reproduced in //UE5/Release-5.1 at CL 23058290. This is confirmed to be a regression since the errors do not occur on the previous version and is regression tested o ...
Local binary build fails with iOS platform included
UE - Foundation - Cpp Tools - Sep 26, 2018This report is very similar to [Link Removed] (the command line used to run the build is slightly different), but the build fails with a different error. In this case, a source file is being looked ...
UNetDriver server-side hitch results in ActorInfo->NextUpdateTime far into future
UE - Networking - Feb 16, 2024A high UWorld::Tick DeltaSeconds (i.e. GameThread hitch) results in a high UNetDriver::TickFlush DeltaSeconds. This DeltaSeconds can high (many seconds) if the hitch is long. This value then affects ...
Crash when duplicating the Child Actor Component class
UE - Gameplay - Components - Jun 3, 2019Creating a blueprint class with a child actor component and setting its actor class to Point Light, then copying and pasting it causes the editor to crash. Tested in 4.21.2 (CL - 4753647), 4.22.1 ...
Local binary build fails for iOS platform.
UE - Foundation - Core - Oct 5, 2017Attempting to create a local binary build of the Engine for the iOS platform using BuildGraph is currently failing. While trying to build UHT for Mac using a remote build, the build fails because it ...
Adding pin to CR node causes crash if input variable is assigned to one of the array element
UE - ACT Character - Control Rig - Aug 22, 2025When a node has a variable assigned to one of its pins. You will get a crash every time you add a pin. I am sure this goes for all nodes with with the "add pin" functionality [Link Removed] ...