Unreal Engine Issues
Unreal Engine Issues
Project packaged on Windows for Linux crashes after exiting on Linux
Tools - Aug 18, 2016I noticed this after packaging multiple samples projects on Windows for Linux and running them on my Linux machine. The project exited cleanly, but there was a crash and callstack generated in the ...
HotReload: Static Mesh property reset on custom Static Mesh Component in Pawn Blueprint when a public property is changed to private in the parent Static Mesh Component code class
UE - Gameplay - Blueprint - Aug 24, 2018Performing a Hot Reload after changing some properties in a custom Static Mesh Component code class from public to private appears to reset the static mesh set for any Pawn Blueprints that use that ...
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 ...
Crash: nullptr in FindViewComponentForActor when ActorComponent is attached to Character with Camera Component.
UE - Gameplay - May 17, 2019Selecting an Actor with a Camera and a C++ inherited Blueprint Component that has sub-components,then compiling the BP component leads to a crash. Upon Debugging the Crash Call Stack: FindViewComp ...
Validity of a workaround for an issue with MobileRenderer where RecieveShadow can't be rendered properly
UE - Platform - Mobile - Nov 11, 2024Dynamic instancing is likely causing an issue where meshes that need shadows are getting combined with meshes that do not need shadows causing missing shadows. Tests were done with CSMs. Reproducti ...
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 ...
UDN 472564 - CurlHttp merges headers on redirect
UE - Online - Dec 7, 2018when curl requests are redirected (301) – response headers are merged together and are comma separated. but, Content-Type headers are required to use semi-colon ";" separators. ...
Crash when using Find Substring node if the starting position is higher than the number of characters in the string being searched
UE - Gameplay - Blueprint - Jul 17, 2017If the "Start Position" in the "Find Substring" node is larger than the number of characters in the "Search in" field a crash will occur. ...
[MRQ] Deleting all jobs after rendering queue with executor causes an assertion to fail.
UE - Anim - Sequencer - MRQ - Apr 18, 2022Deleting all jobs after rendering queue with executor causes an assertion to fail. Repro Rate: 3/3 Tested this in //UE4/Release-4.27 @ CL#18319896 by utilizing a For Each Loop and Delete Job node ...
In editor, sub level instance's streaming state persists incorrectly after toggling Level Behavior without saving
UE - World Creation - Worldbuilding Tools - Level Instances - Jun 11, 2025When adding a sub level with world partition streaming to a main level where the streaming is also enabled, setting* Level Behavior* of the sub level to Standalone, and saving the result, in the fir ...