Unreal Engine Issues
Unreal Engine Issues
Line traces don't consistently trigger when colliding between landscape components
UE - Simulation - Physics - Mar 15, 2015Landscapes do not consistently return "hit" on traces. Lots of AH posts on this topic, and votes on public tracker: [Link Removed] ...
Rotating an instanced static mesh
UE - LD & Modeling - Modeling Tools - Mesh Editing - Oct 16, 2019Changing the rotation of an instanced static mesh by 90 or 180 degrees creates a small space in between meshes. ...
STAT_AI_BehaviorTree_InstanceMemory is sometimes wildly inaccurate
UE - AI - Jun 10, 2020From the UDN thread: Turns out this is caused by the way this stat was implemented for the FBehaviorTreeInstance struct: 1) You call IncMemoryStats on construct, before the struct is populated with ...
UDataTableFunctionLibrary::AddDataTableRow() fails for blueprint-defined row structure types
UE - Framework - Blueprint - Feb 2, 2024The editor-scripting blueprint node "Add Data Table Row" fails when the Data Table uses a Row Structure that was defined in blueprint. Internally, it checks if the passed-in UScriptStruct is derived ...
Niagara Fails to Compile Shader For iOS and Android
UE - Niagara - Aug 2, 2018Niagara fails to compile shader for iOS and Android. Unable to test in 4.19 due to assets provided being created in 4.20. Found in 4.20 CL# 4233996 and 4.21 CL# 4247867 ...
Dynamically Created Render Target Does Not Work in Packaged Project
UE - Graphics Features - Mar 27, 2019Dynamically created render targets do not work as expected when packaged for windows. If it is replaced with a static render target, it works fine. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 ...
Support for import/reimport of mesh LODs is unavailable in Blueprint and python
UE - Editor - Content Pipeline - Import and Export - Mar 31, 2020The missing API prevent clients to do good scripted import pipeline tools. there is two UDN thread that can be solve by this JIRA https://udn.unrealengine.com/questions/566538/how-to-add-a-custom- ...
Console Variables Editor plugin disables some CVars in Slate
UE - Editor - UI Systems - Slate - Jan 22, 2024The following console commands do not work when the ConsoleVariablesEditor plugin is enabled.Slate.GameLayer.ViewportSlotVisibleSlate.GameLayer.DebugCanvasVisibleSlate.GameLayer.PlayerCanvasVisibleS ...
ULoadingScreenManager::ShowLoadingScreen() causes a nested UWorld::Tick() that leads to a crash when using CommonLoadingScreen in Lyra.
UE - Content - Sample - Apr 24, 2023Encountering a crash in Lyra when you hit PIE if you have an animation montage document open with an animation segment selected and the preview scene visible in the animation segment details panel. ...
Widget Flickering Observed in RetainerBox with Incorrect LayerId
UE - Editor - UI Systems - UMG - Nov 19, 2024Setting the Phase Count of a RetainerBox to 2 or more may cause other widgets within the same UserWidget to flicker. Upon investigation, we found that during frames where the flickering occurs, the ...