Unreal Engine Issues
Unreal Engine Issues
Project breaks if Online Subsystem plugin is disabled
UE - Foundation - Core - Apr 25, 2017Disabling Online Subsystem prevents the project from loading. On Windows, this produces an error shown in attached screenshot. On Linux, this causes a crash with the attached callstack on project ...
Crash Occurs When Attempting to Resume Execution After Hitting a Breakpoint in a BT Task
UE - Gameplay - Oct 6, 2017When a breakpoint is hit in a BT Task, if you attempt to use CTRL+P to search for and open the BT the task is being run in, try to resume execution, and then return to the original BT Task Blueprint ...
Linux: Assertion at splash screen when trying to open UE4Editor
UE - Platform - Linux - Mar 21, 2017I ran into this while looking to verify [Link Removed] at CL 3355923. I logged the issue I was verifying the fix for last night and have not updated anything locally, so the "OpenGL 4.3 not supporte ...
Crash adding input pose node to animation State
OLD - Anim - May 26, 2020Crash occurs when the user adds an Input Pose node to a State graph in an Animation Blueprint. ...
Packaging failed after create EditorUtilityBlueprint asset inherited EditorTutorial class
UE - Editor - UI Systems - Oct 14, 2021Whenever creating the EditorUtilityWidget asset with EditorTutorial as the parent class, the packaging will fail. If the tutorial is not launched the package will succeed. But launched, it will fail ...
Niagara Scalability Crash When Processing Significance
UE - Niagara - Jun 4, 2025Method FNiagaraScalabilityManager::ProcessSignificance() iterates on indices from Context.SignificanceIndices and uses them to access the State and ManagedComponents arrays. It can then decide to cr ...
USD Export - crashes when sub level holds level instance
UE - Editor - Content Pipeline - USD - Mar 27, 2026The engine is crashing when the user tries to export from a persistent level with a sub level that contains a level instance. ...
Opening Persona causes editor to crash on Linux
UE - Platform - Linux - Nov 17, 2016Attempting to open a skeletal mesh or animation in Persona causes the editor to crash. Regression: Yes Working: 4.13.2 - CL 3172292 Broken: 4.14.0 - CL 3195953 ...
Setting the sequence of a Level Sequence Actor after playing a sequence with an event will crash if played
UE - Anim - Sequencer - Mar 9, 2023The editor crashes trying to find an event on the other level sequence when playing back the new one. ...
Ensures for Pixel and Vertex Shaders occur when running TM-ShaderModels with -onethread
UE - Graphics Features - Jan 20, 2017Two ensures fire when opening the TM-ShaderModels Map in QAGame with the -onethread argument. The callstacks look identical with the exception that one is for a pixel shader and the other is for a v ...