Unreal Engine Issues
Unreal Engine Issues
Divide by zero in beam update can cause editor to crash in Cascade
UE - Niagara - Sep 23, 2019The licensee has traced the issue back to a divide by zero in UParticleModuleTypeDataBeam2::Update. If the Target and Source are the same then the beams magnitude will be zero. When there is a Nois ...
InstanceDecorators of URichTextBlock is increased everytime add it to viewport
UE - Editor - UI Systems - Jul 29, 2021URichTextBlock::UpdateStyleData() does not check whether DecoratorClasses already had any specificed DecoratorClass. So every time you turn UMG on and off from the Viewport, Decorator Classes will i ...
Opening blueprint debugger crashes editor
UE - Gameplay - Blueprint - Apr 29, 2016The editor crashes upon attempting to open the blueprint debugger through the Window menu. Frequency: 2/2 Regression (Yes) issue (does not) occur in 4.11.2 ...
Use Viewport's BackBuffer as Pixel Shader's input texture fails on Android
UE - Platform - Mobile - Oct 20, 2016UDK Link: link title In this project, they need to get the BackBuffer(including UMG), and use this BackBuffer to do some post-processing. So follow the code in FViewportSurfaceReader :: ResolveRende ...
HTML5 packages cause an error when being launched onto Chrome 32/64-bit and Firefox 32-bit
UE - Platform - Mobile - Sep 27, 2017Attempting to launch a project packaged for HTML5 on Google Chrome 32/64-bit or Firefox 32-bit results in an error. According to Nick Shin, this is due to asm.js and does not include in newer versio ...
Details customizations with object references can cause map loading to fail.
Tools - Jan 23, 2018This crash can be reproduced by adding a graph editor to a details customization. This crashes because the graph editor is holding a strong reference to the graph object on the actor component duri ...
Crash on opening Sequence Director for Level Sequence
UE - Gameplay - Blueprint - Oct 15, 2020Within the project attached, the Sequence Director can not be opened for the Level Sequence "SkateReel Sequencer Crash." The user reports being able to open the Sequence Director prior to copying an ...
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 ...
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 ...