Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor_Renderer!FMaterialShader::VerifyExpressionAndShaderMaps() [shaderbaseclasses.cpp:148]
UE - Graphics Features - Jun 14, 2017This is a common crash occurring in the 4.16 release. It is spread out across many different CrashGroups with slight variations in Callstack. Additional information is not available at this time. ...
Crash during package save due to the async text mesh build in Text3D
UE - Virtual Production - Sep 22, 2022Saving a package in the editor while there is a queued text mesh build will cause a fatal error because the build will execute during the save, and creating objects while saving is not allowed. This ...
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 ...
Control Rig settings are not retained between editor sessions or carried into deployed game
UE - Anim - Rigging - Control Rig - Jun 10, 2020Control Rig settings are not retained between editor sessions or carried into deployed game ...
Crash occurs when duplicating a State Machine in the My Blueprint panel within an Animation blueprint
UE - Anim - Runtime - Anim Blueprints - Aug 17, 2022This is not a regression. Tested in //UE4/Release-4.27 CL18319896 Crash occurs when duplicating a State Machine in the My Blueprint panel within an Animation blueprint. ...
Make Writable button does not work as intended when using Subversion
Tools - Oct 22, 2015When using the Make Writable button, it is intended to make the file editable without the prompt to check an asset out popping up on subsequent attempts to save the asset. This does not work for Sub ...
Movie playback doesn't work on Mac and iOS the way it did before
Tools - Aug 5, 2016New media framework is making Mac/iOS not render ...
Race condition in full builds of UE4 engine source
UE - Foundation - Cpp Tools - UnrealBuildTool - Sep 26, 2019This is a race condition caused by how "Clean.bat", a batch file used during rebuilds, tries to manually rebuild the UnrealBuildTool project when it runs. This causes a spam of UnrealBuildTool build ...
AddComponent node fails to be scheduled after adding an "expose on spawn" variable to an ActorComponent-based Blueprint Class.
UE - Gameplay - Blueprint - Nov 13, 2015If an existing AddComponent node is placed in an Actor Blueprint's Event Graph for a custom ActorComponent-based Blueprint Class, the node will fail to be scheduled after adding a variable marked "E ...
Placed instances do not update dynamic binding after hot reload
UE - Foundation - Cpp Tools - Hot Reload - Oct 6, 2017Adding a dynamic binding and preforming a hot reload sometimes causes the binding to not be registered by class/blueprint instances that already exist in the world. Instances need to be replaced fr ...