Unreal Engine Issues
Unreal Engine Issues
Iterative Cook does not only cook new content from Unreal Frontend
UE - Foundation - Core - Cooker - Jun 14, 2018Using iterative cooking should only cause new or changed content to be cooked but in the Unreal Frontend, content is cooked every time, despite nothing being added or edited. Logs from two subseque ...
Compressed anim sequence data isn't updated immediately when a mesh is reimported
UE - Anim - Runtime - Mar 21, 2022It seems that when reimporting a mesh that has added bones we aren't updating the compressed data within the anim sequences to account for the change in indicies of the virtual bones. If a user cal ...
WasRecentlyRendered() and GetLastRenderTimeOnScreen() still triggers when a skeletal mesh re-enters the view frustum despite being occluded.
UE - Rendering Architecture - Dec 4, 2024AActor::WasRecentlyRendered() and UPrimitiveComponent::GetLastRenderTimeOnScreen() both still trigger when a skeletal mesh (occluded behind a wall) re-enters the player's view frustum after being ou ...
Changes of parameters from materials do not update in viewport after UE restart until recompiling
UE - Graphics Features - Jan 31, 2018There is an issue where changes of VECTOR(3) parameters from materials do not update in viewport after UE restart until recompiling. This issue does not appear to be a regression. ...
Maps fail to respond to any changes made in the CDO if any value has been modified in a loaded instance
UE - Gameplay - Blueprint Editor - Mar 18, 2020TMaps do not function as I would expect when blueprinted. Any change made to the instance completely disables inheritance of all changes to the CDO, rather than only overriding the keys that are mod ...
Assertion occurs when undoing a Child State's unparenting from another Child State in AI State Trees, leading to a crash.
UE - AI - StateTree - Apr 15, 2022Assertion occurs when undoing a Child State's unparenting from another Child State. Repro Rate: 5/5Assertion failed: false [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Public\Widgets\Views ...
UE 5.4 - Specular/reflection disappears above 4096 resolution render
UE - Rendering Architecture - Aug 1, 2024After a viewport is more than 4096 pixels wide, Lumen's specular reflections buffer cuts its width off at 4096 pixels. It appears that the affected buffer is "Lumen.Reflections.ResolvedSpecularIndi ...
During blueprint reparenting SimpleConstructionScript subobject unmodified values are retained as modified values
UE - Framework - Blueprint Editor - Nov 27, 2024When reparenting blueprints and both the old and new parent blueprint contain a subobject but with different values on it, the reparented blueprint doesn't correctly inherit values from the new pare ...
No option to set the Map Directory To Auto Reimport setting if the Editor Settings window is closed after adding a new Directory to Monitor
If a new Directory to Monitor is added to the Auto Reimport settings, and the Editor Settings window is closed before the Map Directory To option is set, when the Editor Settings window is re-opened ...
PCG Graph on 2x2 Landscape incorrectly displays weight on paint layers
UE - World Creation - Procedural Tools - PCG Graph - May 26, 2023In my example picture I have "Grass" set as the target attribute area but the debug cubes are appearing on the dirt and snow as well. This only happens when the landscape subsections are set to 2x ...