Unreal Engine Issues
Unreal Engine Issues
Text in an Editable Text component remains unchanged when set to an empty value
UE - AI Workflows - UI Systems - Dec 1, 2022This is a regression. Tested in //UE5/Release-5.0 CL20979098 Text in an Editable Text component remains unchanged when set to an empty value by a Set Text(Editable Text) node. ...
Shadow Map Method Shadow Maps doesn't allow for Static Meshes to shadow Moveable Meshes with a Stationary Light source
UE - Rendering - Features - Shadows - Jan 5, 2023This is a regression tested in //UE5/Release-5.0 CL20979098 Shadow Map Method Shadow Maps doesn't allow for Static Meshes to shadow Moveable Meshes with a Stationary Light source. ...
Generated instances can not be cleaned up when PCGVolume is copied to a different level
UE - Graphics Tools - PCG - Procedural Tools - May 19, 2025Copying a PCGVolume beyond a level creates an instance that cannot be deleted. In UE5.5 or later, it is possible to delete the instance by pressing Cleanup button with Ctrl key (purge all components ...
PIE also rendering in-active / unfocused editor viewport
UE - Rendering - Features - Nov 28, 2025In 5.8, after entering PIE, the editor will start doing two SceneRenders per frame. This dramatically drops performance. Presumably this second render is for the inactive / unfocused editor viewport ...
Adjusting color picker value for color structs within a structure crashes editor
UE - Gameplay - Blueprint - Aug 1, 2016Attempting to adjust the value of a color struct via the color picker in structures crashes the editor. Frequency: 3/3 CrashReporter: [Link Removed] Regression (Yes) issue (does not) occur in 4. ...
Setting color in linear color struct variable within another struct crashes the editor
UE - Gameplay - Blueprint - Jun 16, 2016Setting color in linear color struct variable within another struct crashes the editor. Frequency: 4/4 Regression (yes) issue (does not) occur in 4.11.2 ...
Material Editor Assertion Crash When Collapsing Material Attributes
UE - Rendering - Architecture - Materials - Jul 14, 2022Collapsed material attribute nodes cause an editor assertion crash in the material editor when viewed or opened. Assertion failed: (Index >= 0) & (Index < ArrayNum): Array index out of bounds: 0 fr ...
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 ...
Editor crashes while saving or closing after heightmap import
UE - LD & Modeling - Terrain - Landscape - Aug 5, 2016Editor crashes while attempting to save or close project after importing a landscape from a heightmap. Frequency: 2/2 Crashreporter: [Link Removed] Regression (yes) issue (does not) occur in 4.1 ...
Niagara module "Beam Emitter Setup" makes attribute Emitter.BeamID flick between -1 and LoopCount every frame
UE - Rendering - Architecture - Niagara - Mar 6, 2026When working with beam and ribbon effects in Niagara, Emitter.BeamID is used to fill Particles.RibbonID so that a looping emitter can spawn multiple discrete beams. Emitter.BeamID is assigned by mod ...