Unreal Engine Issues
Unreal Engine Issues
Widget components added to characters added in a C++ template will not allow packaged builds to open
UE - Gameplay - Blueprint - Oct 19, 2017When Widget components added to characters added in a C++ template When the build is packaged and you attempt to open it the window will not open, despite a process running in the background Versio ...
Inherited TMap value of type UObject* is not saved on blueprint compile
UE - Gameplay - Blueprint - Oct 20, 2017When a blueprint inherits a TMap variable with a UObject* as the value, compiling the blueprint causes anything set for the value to rest to "none" Workaround: Adding the TMap through the editor re ...
Object type variable isn't accepted by Construct Object node
UE - Gameplay - Blueprint - Aug 15, 2017REGRESSION: Technically a regression from 4.16 Object variables aren't accepted by Construct Object class, even if the value is set to an Object blueprint. The following error is generated:Cannot ...
No Dynamic Shadows on Translucent Materials in iOS Preview
UE - Platform - Mobile - Jul 23, 2018There are no dynamic shadows on translucent materials in the "iOS Preview" for the preview rendering level. Working as intended in 4.16 CL# 3561208, 4.17 CL# 3658906, and 4.18 CL# 3832480. Found i ...
Certain materials are overly bright with Ray Traced Global Illumination denoiser
UE - Graphics Features - Lumen - Mar 14, 2019Ray Traced Global Illumination is causing some materials to glow extremely bright Disabling r.raytracing.globalillumination.denoiser fixes the issue In 4.22 preview 5 binary (5365847) the result i ...
Arrays of Soft Object local variables are not captured for reference graph
UE - Gameplay - Blueprint - May 20, 2019This bug comes from https://udn.unrealengine.com/questions/492861/view.html and is a very similar problem to [Link Removed] The issue is that the code that harvests soft object references stored in ...
Time Synth fails to play 96KHz audio clips
UE - Audio - May 19, 2020TimeSynth 96KHz music clips only play for a split second and then stop. 48KHz files play correctly however 96KHz 16-bit and 24-bit files do not This was reported and tested in 4.25 (CL-13144385) an ...
Static lights become stationary after toggling visiblity of level in packaged build
UE - Graphics Features - Jun 11, 2025In 5.5, there is a regression with baked lighting where static lights become stationary lights when a level is hidden and then made visible again. This happens in packaged builds and shows up as sta ...
PlayerCollision visualization incorrect on LandscapeSplineMesh when Nanite is enabled
UE - Graphics Features - Nanite - Dec 3, 2025From licensee: I’ve found an issue with the visualization of PlayerCollisions when using LandscapeSplineMesh with a mesh that has Nanite enabled. The Chaos collisions shown in the Chaos Visual Debu ...
The AND node always calculates all inputs
UE - Gameplay - Blueprint - Nov 5, 2015The AND node always calculates all inputs, even if the first input fails as False. Probably related to [Link Removed] (currently unresolved, but a Select node-specific fix is mentioned in the comme ...