Unreal Engine Issues
Unreal Engine Issues
Interchange framework is bypassed on the second attempt after a failed import
zComponent - Archive - Jul 14, 2025Hello! We have encountered a bug with the Interchange pipeline. When an interchange texture import is cancelled due to non-power of 2, and then the same texture is imported again without any change ...
Spline mesh deform breaks WPO when used with Nanite meshes
UE - Rendering - Features - Nanite - Oct 13, 2025Nanite spline meshes deforming along the world normal vector do not use the same world normal as a non-Nanite spline mesh. This results in inconsistent behavior between Nanite and non-Nanite spline ...
Shadows become disabled for Datasmith imported lights on resync
TM - Interoperability - Aug 4, 2026Reported in SF [Link Removed] For Datasmith models containing lights, resynchronizing the model after any changes will cause any lights that had shadows enabled prior to the sync to have that setti ...
Editor window changes size each time the same project is opened
Tools - Apr 6, 2015The editor window is slightly bigger each time you open the same project. This doesn't persist over to any other project. I also checked in 4.8 from p4, this also occurs in: 4.8 /UE4/Promoted-CL ...
Building in VS fails if Application.ico is missing
UE - Foundation - Core - Mar 25, 2015When building a project in VS, the build process will fail if Application.ico is missing from the /Build/Windows/ folder. User reported seeing this when checking in/checking out a project on differ ...
Asset with child actor component (documentation actor) crashes upon level load
UE - Gameplay - Jan 18, 2016Adding a child actor component of type Documentation Actor to a blueprint, then adding that blueprint to a level and saving will cause the editor to crash upon re-opening the map. CrashReporter: N ...
Converting a landscape to blueprint crashes editor
UE - Gameplay - Blueprint - Sep 17, 2015Converting a landscape to a blueprint immediately crashes the editor. Frequency: 2/2 ...
If Master Pose Component is occluded, all target components stop animating
OLD - Anim - Aug 18, 2015When using "Set Master Pose Component", child components only animate for a few seconds if the Master Component goes out of view of the player camera. In the attached project, the master pose compo ...
Editor freezes then crashes while attempting to save during PIE
UE - Gameplay - Blueprint - Jun 8, 2015A level blueprint that has blueprint functions on keybound events freezes and crashes when in PIE and save is pressed. Frequency: 7/7 Crashreporter: [Link Removed] Note: If all level blueprint n ...
Using the 'Show Only Selected' Option with Grouped Actors Selected in the Viewport Still Hides the Grouped Actors
Tools - May 18, 2015When selecting grouped actors within the viewport and attempting to use the 'Show Only Selected' visibility option from the right-click menu, the actors will be hidden. It is only when you select th ...