Unreal Engine Issues
Unreal Engine Issues
Editor crashes opening MyCharacter BP after converting to 4.5
UE - Gameplay - Blueprint - Nov 4, 2014On a Mac, when opening a custom character blueprint from a project that has been converted to 4.5 from a previous version of the engine, the engine immediately crashes. ...
Particle Parameter Won't Update If Used With EventReceiver Spawn
UE - Niagara - Jan 26, 2017Particle Float Parameter for the EventReceiver Spawn doesn't update when accessed via blueprint it just retains whatever default value is assigned in cascade. I've confirmed other modules work as ex ...
AddComponent node doesn't work correctly with macro libraries
UE - Gameplay - Blueprint Compiler - Apr 25, 2023This is a unique problem with macro libraries and the AddComponent node. It would appear that the issue has to do with the MakeNewComponentTemplateName function that we use when we create these func ...
GetActorsPerception useless in 4.7
UE - AI - Mar 11, 2015The new AI Perception system's BP API, marketed in release notes, depends on UAIPerceptionComponent::GetActorsPerception, that, as one AnswerHub user points out, is useless due to a buggy condition ...
8.1 Advanced asset creation selection is flickering a duplicate selection
Tools - Apr 26, 2017Workaround Seemed that closing and reopening the project resolves this issue This is NOT a regression as it happens in 4.15.2 ...
Volumetric Lightmap Holes Appear Every Fifth Build
UE - Graphics Features - Sep 11, 2018Volumetric lightmap holes appear every fifth build. Found in 4.19 CL# 4033788, 4.20 CL# 4302132, and 4.21 CL# 4348893 ...
SetActorLabel() is slow on Landscapes
UE - Graphics Tools - Terrain - Landscape - Jan 7, 2025I've noticed calling SetActorLabel() on a Landscape will call PostEditPropertyChanged() which causes the Landscape Components to regenerate all collisions. As per the repro, this can take a long tim ...
Importing Mesh with "Import Animations" enabled crashes editor.
OLD - Anim - Nov 13, 2015After importing a mesh with "Import Animations" enabled the editor crash's. Importing only the mesh does not crash the engine. Importing animation separately and assigning to Skeletal mesh on import ...
Changing line thinkness causes line to not be rendered
UE - Graphics Features - Apr 27, 2017When drawing a canvas line item to a render target, changing the thickness of the line to anything other than 0 causes the line to not be rendered if the associated material's blend mode is set to T ...
Cascade sprite scales incorrectly / flickers when set Screen Alignment to Velocity
UE - Niagara - Dec 10, 2019Very easy to reproduce. uasset file provided. Doesn't happen in 4.22.3 ...