Unreal Engine Issues
Unreal Engine Issues
Blueprint component lost when reparenting native base class and component name collides
UE - Gameplay - Blueprint Compiler - Feb 26, 2018Use attached project to skip c++ steps. Follow from step 6. Update: It appears that the same symptoms occur if you simply change the name of an existing subobject, without changing the property/f ...
SunTemple crash on load on some iOS devices
UE - Platform - Mobile - Jun 8, 2018This does not occur when attempting to repro using a template code project; testing on the same device. This crash occurred on an iPhone 6, v11.4 (A8) It did not occur on an iPhone X, v11.4 (A11 B ...
Movable point light disappeared by MinScreenRadiusForLights and appeared back looks deemed.
UE - Platform - Mobile - Jun 25, 2021The movable point light is abnormally lit when it disappeared by the setting of r.MinScreenRadiusForLights rather than "Max draw distance" and appears back. After you disable and enable the "Affect ...
[AI] Area Class to Replace does not work on SplineNavModifierComponent
UE - AI - Navigation - Jun 16, 2025The SplineNavModifierComponent does not have the same behavior as regular nav modifier components where the modifier can specify that it only replaces a given NavArea class. Setting the area class t ...
Crash on PIE exit after dynamically enabling and disabling tick functions through the Level Script blueprint.
UE - Gameplay - Mar 23, 2018User reports hitting an assertion due to invalid FTickTaskManager state when game is attempting to unregister a tick function that was previously disabled dynamically. Failed assertion is in FTickT ...
Editor crashes upon PIE unless tick is disconnected and reconnected
UE - Gameplay - Blueprint - May 14, 2015Project crashes if user presses compile or PIE unless they first disconnect and reconnect event tick within blueprint component BP_BuildStage. Frequency: 4/4 CrashReporter: [Link Removed] ...
Crash when setting console command for shadow max resolution to 1
UE - Graphics Features - May 29, 2015When setting the console command r.shadow.MaxResolution to a value of 1 will cause a crash. CrashReporter: [Link Removed] ...
Crash when renaming AnimGraph function in AnimBP
OLD - Anim - Apr 17, 2015When renaming the AnimGraph in an Animation Blueprint, the editor crashes after you hit enter. [Link Removed] [Link Removed] Occurs in: 4.7.5 Release CL:2503383 4.8 Main CL:2513846 ...
UHT needs to enforce that BlueprintNativeEvents have "virtual" on user-defined _Implementation functions
UE - Foundation - Core - Mar 3, 2015Forgetting to add the "virtual" in engine code implementations of these _Implementation functions makes them not overridable by users. UHT should catch this and emit a warning/error. For instance t ...
D3D HUNG crash - FD3D11DynamicRHI::RHIReadSurfaceFloatData()
UE - Graphics Features - Jan 18, 2017This is one of the widespread D3D Hung crashes that have existed since 4.14. This particular callstack has affected around 300 users. The issue has been successfully reproduced on a home PC. Dxdi ...