Unreal Engine Issues
Unreal Engine Issues
Material expression called Compiler->TextureParameter() without implementing UMaterialExpression::GetReferencedTexture properly
UE - Rendering - Architecture - Materials - Apr 27, 2022when trying to replace a Material Function instance, with another instance, as the base color of a material within the Material Graph, the editor crashes with the following error:Assertion failed: ...
Alembic import causing a crash
UE - Gameplay - Sep 2, 2016Importing this test asset will cause the editor to crash when using any of the Alembic Import options. I did notice that the source test asset does have 6750 frames but when going through the impo ...
Property Access nodes fail to display variable data in SM transition tooltips
UE - Runtime - Anim BP - May 22, 2026The data shown in the transition tooltip is generated via SKismetLinearExpression::MakeNodeWidget. The issue is that while UK2Node_VariableGet have specific functionality to display the variables a ...
Editor crashes if Sequencer has keyframes for a variable that has changed
UE - Anim - Sequencer - Sep 19, 2018The Editor crashes if loaded sequence has keyframes for an actor variable that has been changed, instead of soft erroring out. This was reported and tested on 4.20.3 (CL-4369336). It was reproduced ...
Landscape UI Elements are not visible
UE - LD & Modeling - Terrain - Landscape - Oct 4, 2016Per conversation between Gareth and Mike, it was determined the Landscape tool is in Game Mode by default. Within the Landscape Tool, all UI elements are disabled by default. This has been observed ...
Disable runtime crash processing allocating too much memory
UE - Foundation - Core - May 26, 2015User has included logs within his AnswerHub post. Spoke with Jarek S. regarding the crash reporter issues he's experiencing, Jarek has requested Jiras: "Allocating like crazy is caused by the run ...
Assertion failed: InputOboeStream != nullptr when changing levels with Android voice enabled
UE - Audio - Jan 7, 2020Assertion failed: InputOboeStream != nullptr when changing levels with Android voice enabled User was able to workaround the issue by replacing Audio::FAudioCaptureAndroidStream::CloseStream() wi ...
Alpha blending is done twice when using RenderOpacity of RetainerBox's parent slot
UE - AI Workflows - UI Systems - UMG - Feb 10, 2023Licensee reported that alpha blending is done twice in the code below, and the fix below seems to fix it. .\Engine\Source\Runtime\UMG\Private\Slate\SRetainerWidget.cpp From:const FLinearColor Compu ...
Migrating a Material Instance pulls along its preview mesh and all associated materials and textures
UE - Rendering - Architecture - Materials - Sep 14, 2015A licensee has complained that if you assign a preview mesh to a Material Instance, it becomes a referenced asset, so migrating that MatInst will also migrate that mesh and whatever material is assi ...
InputModeUIOnly Causes User Interface to Become Unresponsive When Entering Fullscreen on Macs Only
UE - Platform - Apple - Dec 6, 2016The licensee is setting their game to InputModeUIOnly and ShowMouseCursor in the HUD blueprint resulting in the user interface becoming unresponsive when entering fullscreen on a Mac but not on a PC ...