Unreal Engine Issues
Unreal Engine Issues
(Regression) Risk of PostLoad() assert crash in all cooked, nativized builds with async load thread enabled.
UE - Gameplay - Blueprint - Oct 25, 2018This is a regression that was introduced by the fix for [Link Removed]. As a result, we can potentially hit an assert in a cooked, nativized build during async load of a non-nativized Blueprint CDO ...
UWorld::CleanupWorld causes issues with sublevels when changing maps after building lighting
Tools - Mar 1, 2019A licensee has reported that UWorld::CleanupWorld is causing issues with assets in Sublevels if you build lighting on the parent level, save all of the maps, and then change to another level. The as ...
Sequential Level Loading in Python causes Crash
UE - Editor - Workflow Systems - Apr 16, 2019Loading all the levels selected in the Content Browser and running the aforementioned Python script causes the editor to crash Tested in 4.20.3 (CL - 4369336), 4.21.2 (CL - 4753647), 4.22 (CL - 5 ...
Niagara GPU particles will always have a lifetime of one second if they use a Collision Module
UE - Niagara - May 2, 2019GPU Particles will always have a lifetime of one second when using a collision module. This is a result of an issue with how off screen timing is handled. GPU particles that are off screen should on ...
Virtual Texturing causes crash
UE - Graphics Features - Jul 29, 2019Virtual streaming a 4K texture and setting the max texture size to 2048 causes the engine to crash. Tested in 4.21.2 (CL - 4753547), 4.22.3 (CL - 7053647), 4.23 (CL - 7445012), 4.24(CL - 7646041) ...
Set Component Tick doesn't work on Cascade Particle Systems
UE - Niagara - Jul 31, 2019Changing the Component Tick Interval via Blueprints has no effect on Cascade particle system components. Tested in 4.21.2 (CL - 4753647), 4.22.3 (CL - 7053647), 4.23 P3 (CL - 7445012), 4.24 (CL - ...
Multiple Planar Reflections are not captured when forward shading
UE - Graphics Features - Oct 25, 2019After enabling forward shading, having two planar reflections in the scene causes one instance to not render properly. Tested in 4.22.3 (CL - 7053647), 4.23.1 (CL - 9631420), 4.24 (CL - 9828119), 4 ...
Sorting a Blueprint variable into a subcategory separates variables into separate category structures
UE - Gameplay - Blueprint - Oct 14, 2019Within the Blueprint Editor, it is possible to create subcategories for variables to be sorted into. Doing so separates variables not nested into subcategories out into standalone, top-level structu ...
Inventor Assembly imports incomplete or missing geometry
UE - Editor - Content Pipeline - Datasmith - Importer - May 22, 2020It seems that UE4 has a problem with importing Inventor Assemblies and Subassemblies. Files are either the wrong orientation or missing their geometry completely. This was reported and tested in 4 ...
Naming a variable 'LifeSpan' causes the default value to be reset after closing the editor
UE - Gameplay - Blueprint - Nov 3, 2020Customer reported this issue in Salesforce. I repro'd this issue in 4.25.3, 4.25.4, and 4.26. Therefore marking it as not a regression. Renaming the variable something like "LifeTimer" does not res ...