Unreal Engine Issues
Unreal Engine Issues
StateTree : Crash when executing GetPropertyRef in SubTree linked via Linked Asset
UE - AI - StateTree - Aug 26, 2025A crash occurs when GetPropertyRef node is executed from a SubTree that is linked within a StateTree, which itself has been linked from a parent StateTree via a Linked Asset ** . The processing con ...
Material Analyzer misreports static params for Material Layers
UE - Rendering - Architecture - Materials - Jan 20, 2026When analyzing materials that use Material Layers, Material Analyzer reports that multiple Material Instances “share the same static parameter array” and therefore recommends reparenting so that onl ...
WidgetBlueprint::DrawLines has broken AA on sharp cornered lines
UE - Editor - UI Systems - May 9, 2016WidgetBlueprintLibrary::DrawLines which calls FSlateDrawElement::MakeLines has broken AA for sharp cornered lines. ...
Crash on Applying a Material with PN Triangles Tessellation to Large Landscape
UE - Graphics Features - Apr 21, 2015When applying a Material with nothing in it but PN Triangles turned on to a Large Landscape, the engine will crash. Also Reproduced in Main Promotable-CL-2513846 ...
Teleport node sets the movement mode for a pawn back to default
UE - Gameplay - Oct 10, 2016Teleport node sets the movement mode for a pawn back to default. The current movement is overridden by the default after using teleport node ...
Editor freezes when setting browser filepath for inserted element in project settings
UE - Platform - Mobile - Feb 7, 2017May be similar issue as [Link Removed] but with slightly different repro steps. Not a regression as it occurs in 4.14.3 ...
Dynamic Material instance Does Not Return Scalar Parameter Values Array Correctly
UE - Graphics Features - Apr 25, 2017It appears that MIDs do not return Scalar Parameter Values in an array. It will return the parameters during runtime but not in the construction script. The steps are meant to show you that you ca ...
Launching game on Oculus Rift through SteamVR reverses hands
UE - Platform - XR - Sep 13, 2017When launching the VR Template for example on Oculus Rift but through SteamVR using -hmd=steamvr and disconnecting htc Vive, the player's hands are reversed. Important for titles that want to sell ...
Variable Value Range doesn't work during Runtime
Tools - Jul 3, 2018If a variable has been set to a default value and has a declared value range, it will ignore the value range and print the set value.The tooltip text is misleading or out of date as it gives the imp ...
Blend Space Per Bone Blend does not apply blend weight correctly
UE - Anim - Runtime - Aug 30, 2019The Blend Space's Per Bone Blend doesn't always apply its interpolation speed correctly to the appropriate bone or at all. ...