Unreal Engine Issues
Unreal Engine Issues
Can not find abstract class in actor class dropdown list in GetAllActorsOfClass node
UE - Gameplay - Blueprint - Dec 15, 2020The behavior of non-variable class pins has changed in 4.26 where abstract classes like AInfo are being excluded from class pickers for general utility functions like GetAllActorsOfClass. This is no ...
WaitMutex behaves poorly when there are casing differences in the same path
UE - Foundation - Cpp Tools - UnrealBuildTool - Jan 5, 2021The proposed solution here is to make the casing of the path provided to the hashing function for the mutex consistent with something like:publicstatic string GetUniqueMutexForPath(string Name, stri ...
Crash when FVolumetricRenderTargetViewStateData::Mode is not properly initialized
UE - Graphics Features - Jan 15, 2025A licensee has reported that occasionally a race condition triggers a crash during the initialization of FVolumetricRenderTargetViewStateData. If FVolumetricRenderTargetViewStateData::Mode is not pr ...
Some reset to default buttons not appearing for UMG Appearance
UE - Editor - UI Systems - Aug 19, 2016Some reset to default buttons not appearing for UMG Appearance. This seems to only affect the Categories like Brush, Style or categories under Style like Normal/Hovered. Individual properties rese ...
Connection is broken between Custom event and Collapsed Graph, which is promoted to Macro
UE - Gameplay - Blueprint - Oct 8, 2020When user promotes collapsed graph that has connection to custom event to macro, connection between that custom event and new macro is brokenThis is not the case when directly collapsing selected no ...
Print String on Event Tick not working as expected with Cinematic Camera Actor in Blueprint
UE - Anim - Sequencer - Sep 29, 2016Print String does not persist when called on Event Tick within a Cinematic Camera Actor Blueprint. This could be problematic if users have a cinematic camera in their blueprints and using Event Tic ...
AI MoveTo Blueprint node will zero velocity on Pawn when called, causing a freeze if the Pawn is already moving
UE - AI - Oct 4, 2016AI MoveTo Blueprint node will zero velocity, causing a stop when a new destination is set if the Pawn is currently moving. Regression: Yes Worked: 4.12.5 (CL 3039270) Broken: 4.13.1 (CL 3142249) F ...
Vertex Painting changes collision complexity if the asset is saved while vertex painting
Tools - May 12, 2016Vertex Painting changes collision complexity if the asset is saved while vertex painting. The collision change is set to "Use Complex Collision as Simple". If this is intended functionality there sh ...
Memory stomp in UTexture2DArray::SetPlatformData
UE - Texture - May 30, 2024A crash from bad memory access can happen when clearing the textures in a Texture2DArray asset. This appears to be because the order of operations when deleting the platform data is: ``` if (Privat ...
r.AllowStaticLighting=False causes Rendering Issues
UE - Graphics Features - Sep 22, 2015When setting a project to only use dynamic lighting with the console variable r.AllowStaticLighting=false, the rendering of a Skeletal Mesh in Persona is corrupted. r.AllowStaticLighting=False: in ...