Unreal Engine Issues
Unreal Engine Issues
Lighting Only Affects Tilemaps From One Direction
UE - Graphics Features - Oct 9, 2018Lighting only affects tilemaps from one direction. Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.22 CL# 4435744 ...
[CRASH]SIGSEGV: invalid attempt to access memory at address 0x0
Tools - Jan 7, 2015Callstack: <CALLSTACK START> FTaskThread::ProcessTasksUntilQuit(int) Address = 0x1091943e5 (filename not found) [in UE4Editor-Core.dylib] RenderingThreadMain(FEvent*) Address = 0x10de37e4b (filena ...
Event Tick is not running once packaged
UE - Gameplay - Components - Jul 20, 2015Event Tick works when it's running on Windows however once it's packaged or even launched onto all platforms, the event tick does not work as anticipated. This happens on all platforms. *Project ca ...
#ifdef and #ifndef have no affect in header files
UE - Foundation - Core - Mar 17, 2016#ifdef and #ifndef have no affect when used in the header file of a class. Ex: #ifndef MYMACRO UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Test) float ANumber; #endif ANumber v ...
NetUpdateFrequency Affected by Global Time Dilation
UE - Networking - Jan 13, 2025Changing the global time dilation in a multiplayer game affects the rate at which actors are considered for replication, and setting it to 0 will even cause replication to stop entirely (unless the ...
Fix Up Redirectors does not affect redirectors within renamed folder
Tools - Sep 23, 2016Fix Up Redirectors does not affect redirectors within renamed folder. ...
Animation retargeting adversely affects looping animations
OLD - Anim - Nov 21, 2014Retargeting a skeleton to a looping animation results in the animation skipping at the end of the loop (Appears to miss 1 or 2 frames.) ...
DynamicMaterialParameters Niagara module resets write flags on emitter update
UE - Niagara - Feb 4, 2026When using the DynamicMaterialParameters Niagara module in UE 5.6, 5.7, and UE5-Main (CL 50298778), updating an emitter causes Boolean values, such as Index0Float0Write, to reset to default values, ...
Bloated instruction counts in the material editor causing long compiles
UE - Graphics Features - Apr 17, 2019artists are dealing with greatly increased iteration times due to long shader compiles when working in the material editor. This has regressed over time as we add more features to the point were wor ...
NavArea blueprints in Develops folders appear to have no affect
UE - AI - Nov 6, 2015If the user creates two NavArea Blueprints (one in the content folder and the other in a developer folder) if one is inside of a developer folder then it will appear to have no affect when it comes ...