Unreal Engine Issues
Unreal Engine Issues
When editing a Niagara module an error can occur if using non-module functions, even with a correctly set usage bitmask
UE - Niagara - Feb 14, 2023When editing the module the call to FHlslNiagaraTranslator::HandleDataInterfaceCall has the usage "Module", so it treads the module as if that was its stack context, even though the module's usage b ...
Input Bindings losing rename information after re-opening project
If an input binding is renamed and the editor closed and re-opened, the input binding will revert to it's original name. ...
Retriggerable delays do not work on tick events
UE - Gameplay - Blueprint - Mar 18, 2015Retriggerable delays and the nodes after are not recognized when triggered by tick events. ...
Multigates only fire the first output when inside a function
UE - Gameplay - Blueprint - Apr 2, 2015Multigates only fire the first output when inside a function. The same setup in the Event Graph will function as intended. Reproduced in 4.7.4 binary and Main (//depot/UE4/Promotable-CL-2498147) ...
The default values of a Struct variable in a Blueprint will return to the default values of the Struct on compile when all values are set to 0
UE - Gameplay - Blueprint - Jan 19, 2015The default values of a Struct variable in a Blueprint will return to the default values of the Struct on compile when all values are set to 0. Possibly related to [Link Removed] Tested in 4.6.1 a ...
LIVE: Character is jittering with Blend-Weights enabled
OLD - Anim - Oct 31, 2014When changing the value of the blendweights of a character in a level, it is breaking the animation that the character has and causign the animation to show as jittery. ...
[CrashReport] UE4Editor_Engine!UAnimMontage::IsValidAdditive() [animmontage.cpp:702]
OLD - Anim - May 19, 2016Error message: Stack overflow - code c00000fd (first/second chance not available) Source Context: 687 if (SyncGroup != NAME_None) 688 { 689 CollectMarkers(); 690 ...
Crash When Copying Comment Box from a Blueprint to a Behavior Tree
UE - AI - Jun 8, 2016The editor crashes when pasting a comment box from a blueprint into a behavior tree. Found in 4.12.1 binary. Reproduced in 4.11.2 binary and Main CL 3005971 Source Context94 95 fo ...
Widget IsHovered does not register a TouchUp
UE - Editor - UI Systems - Aug 25, 2015Widget node IsHovered does not register a TouchUp when you TouchDown onto a touchscreen device. It keeps the same x,y coordinates when moving your finger along the screen. I have spoken with Chris ...
Hard shadow edges appear when using Displacement Fade on a Nanite tessellated landscape
UE - Rendering - Graphics Features - Shadows - Feb 2, 2026A hard shadow edge occurs when displacement fade is enabled on a Nanite landscape with tessellation. This occurs on the edge between two clipmap levels of the VSM. The artefact can be somewhat red ...