Unreal Engine Issues
Unreal Engine Issues
Loading Duplicated Level via Python API Crashes Editor
UE - Editor - Workflow Systems - Feb 16, 2023When called from Python, in 5.1 the load level invocation results in a kernel panic style crash of the editor, with a message about the map leaking memory and not being able to be garbage collected ...
GPU Crash in Niagara Fluids template when WorldSpaceSize has a component at 0
UE - Niagara - Apr 26, 2024The NiagaraFluids plugin provides several Niagara System templates to use as a starting point for the user's own Systems. The templates in category "3D Gas", such as "Grid 3D Gas Explosion", include ...
TMap Contains Node Returns False Incorrectly Under Specific Circumstances
Tools - Nov 20, 2019The Contains node doesn't return an existing row from a data table under specific circumstances. This didn't occur when the struct the data table is based on was made via blueprints or there are mor ...
Sequencer fails to package during Build command for ASTC
UE - Platform - Mobile - Jan 15, 2017When attempting to test for ESDSR on Android, the Sequencer project fails to package towards the end of the Build Command. Runtime/OpenGLDrv/Public\OpenGLESDeferred.h(267,5) : warning: 'OPENGL_ES2 ...
Combining Layered Blend Per Bone with Cached Pose nodes can break root motion extraction
UE - Anim - Gameplay - Aug 23, 2023When the input to a Layered Blend Per Bone node is two instances of the same cached pose, we aren't sampling root motion correctly. In the attached example, the weight on the root bone is 0 and Ble ...
"Enable Stencil Test" Mobile crash
UE - Graphics Features - Sep 10, 2019A material with 'enable stencil test' will crash on mobile. Enable Stencil Test is a new option in materials as of 4.23 Confirmed with OpenGL 3.1 + 2 and Vulkan on Pixel XL Also Crashes on iOS ...
Scene Color node with UV input on a transparent material renders incorrectly in stereo
UE - Platform - XR - Jan 19, 2021From Licensee: When we have Instanced Stereo enabled, all our materials that use Scene expression nodes (SceneDepth, SceneColor, etc...), render incorrectly in the right eye. It only happens to the ...
Possible incorrect pointer manipulation in BeginPackageCacheForCookedPlatformData
UE - Foundation - Core - Cooker - Dec 12, 2017In UCookOnTheFlyServer::BeginPackageCacheForCookedPlatformData(), there is a pointer to int32 called CurrentAsyncCache that is used as an index. It's value is dereferenced before it is checked, but ...
Packaged Project with Media Player Asset 'From Memory' Crashes and Corrupts Project
Tools - Feb 9, 2015There is no Callstack associated with this crash. And I was unable to reproduce this in main due to a known issue when switching the 'Stream Mode' to 'From Memory'. When packaging a project in 4.6. ...
Non-reflected header files not recognized by UHT
UE - Foundation - Core - Jul 28, 2015A user adds 3 .h files though Visual studio where the first contains a struct, the 2nd includes the 1st, the 3rd includes the 2nd and tries to make a variable of the struct declared in the 1st. The ...