Unreal Engine Issues
Unreal Engine Issues
Landscape cooking takes as much as 6 times longer in 4.18
UE - LD & Modeling - Terrain - Landscape - Jan 10, 2018Some developers are finding that the change to add a bunch of shader types to FLandscapeMaterialResource::GetExcludedShaderTypes() in 4.18.2 increased their project cooking times on PC or console by ...
Setting a ComboBox on the Server does not always work
UE - Networking - Oct 3, 2015Setting a ComboBox on the Server does not always work. In the attached project, a Multicast Event runs some Set Options, all but one of which appear to work on both Clients and Server. On the Server ...
Blurry RVTs after camera jump
UE - Graphics Features - Aug 7, 2025When using Runtime Virtual Textures (RVT) on landscape in UE 5.5+, nearby tiles may remain blurry (low-resolution mips) after launching PIE or making large camera jumps (e.g. via bookmarks or viewpo ...
BlackboardComponent observer can be called for the wrong key
UE - AI - BehaviorTree - Feb 7, 2023We need to, at least, prevent this by clearing observers when running a new BT using a different blackboard. Must also think that this might affect licensees relying on the current behavior (might h ...
Construction Script using GetSizeX/Y from Texture 2D reference returns Divide By Zero Warning when Packaging
UE - Graphics Features - Jul 21, 2016A user has found and reported a divide by zero warning within the Construction Script when packaging for Windows. This does not occur while in the editor as when you begin moving around the blueprin ...
Joining a session in PIE with Auto Connect To Server disabled will crash PIE
UE - Networking - Nov 11, 2015Joining a session in PIE with Auto Connect To Server disabled will crash PIE. Note: this is not specific to the Multiplayer Shootout project used in the repro steps; this will occur in any project ...
FBX & OBJ Files no longer Import with their UVs Depending on Software Used
UE - Editor - Content Pipeline - Import and Export - Sep 6, 2016Importing an OBJ file no longer imports the UVs. Test asset included for OBJ and FBX version of the same file. Added Test FBX from SketchUp Tested with: 4.12.5 CL-3039270 - Working 4.13.0 CL-31 ...
Delay nodes used in a macro cause subsequent macro calls during the delay to never complete
UE - Gameplay - Blueprint - Sep 6, 2016Calling a macro that has a delay node again before the original call's delay could finish will cause the second call to be ignored when reaching the delay node. This did not occur in 4.12.5 and is n ...
[Sound Cue][Blueprint API] - Setting a parameter value a second times does not work
UE - Audio - Apr 9, 2022Setting a parameter on a Sound Cue from Blueprints more than once is not working. The first time a parameter is set works, but any following sets are ignored. This is a regression and does not occu ...
Canceling the Color Picker while modifying Curve Editor colors Moves Transforms Curves
If the user presses 'Cancel' when modifying colors using the Color Picker within the Curve Editor, the curves points are all transformed. Issue is reproducible in the below engine versions: 4.8.3 - ...