Unreal Engine Issues
Unreal Engine Issues
Heterogeneous Volume Actor causes ensures to trigger in Debug builds
UE - Niagara - Aug 24, 2025When a heterogeneous volume actor is used with a volume material in a debug build, the following ensures are triggered: Ensure condition failed: UniformBufferValue || EnumHasAnyFlags(AutomaticallyBo ...
Crash when pressing Ctrl-Z after creating a blueprint function
UE - Gameplay - Blueprint - Feb 20, 2017Crash when pressing Ctrl-Z after creating a blueprint function *This is a regression: Working in 4.14.3-3249277 Not working in 4.15.0-3299760* Crash Reporter: Error message: Access violation ...
Mutable RemoveMesh node with data from DataTable
UE - Anim - Mutable - Jul 28, 2025Hi, We are trying to use Mutable plugin to avoid clipping using the RemoveMeshNode with data from DataTables. However we are having trouble with the most basic example of our idea. We have a Data ...
Users can create project with name of "Stack" which causes conflict with existing "Stack.h"
Tools - Sep 12, 2016Users can create project with existing name of "Slack" which causes conflict with existing Slack.h. Call stack is log file. ...
BP structures added as local variables do not retain default values
UE - Gameplay - Blueprint - Jul 31, 2015Adding a BP structure as a local variable to a function in a UMG widget graph will display the correct default values in the editor, but zero out to per-element defaults at run time. Update: Other ...
Crash occurs while changing between FK/IK mode in Animation Mode on the same frame with Space changing
UE - Anim - Anim in Engine - Jul 11, 2022Crash occurs while changing between FK/IK mode in Animation Mode on the same frame with Space changing. ...
Shipping builds do not execute .exe
After playing with it and attaching in the debugger, it's sitting forever in MigratePreviousEngineIni(). It seems to be looping on DirectoryExists forever, likely here: while(PreviousVersion.GetMi ...
Crash when double clicking on RowStruct's CurveEditor
UE - Editor - Applied Usability - Mar 15, 2024This problem can be reproduced with UE5.3 even after applying fix [Link Removed]. We have verified this issue with UE5.1 and it is not reproduced. ...
Editor crashes if user attempts to open a data table that only has one data type after closing and reopening editor
Tools - Jan 30, 2015Editor crashes if user attempts to open a data table that only has one data type after closing and reopening editor Frequency: 2/2 Crash Reporter: Not currently available ...
Cannot build project for Shipping when bUseLoggingInShipping is set to true for a project that uses replicated properties
UE - Foundation - Core - Mar 22, 2018Enabling bUseLoggingInShipping for a project prevents the project from being built for Shipping if the project includes replicated properties. This is only an issue with binary builds of the Engine. ...