Unreal Engine Issues
Unreal Engine Issues
Per Poly Collision Does Not Update With Morph Target
UE - Simulation - Physics - May 4, 2018Per poly collision does not update with morph targets. Occurs with per poly collision enabled in both skel mesh editors and in details of editor. Video from user can be found in project folder att ...
Thumbnails do not update when setting Primitive Type inside Material Editor
Tools - Oct 24, 2017In the Material Editor in UE4 selecting the Primitive Type under Thumbnail in the Details View does not update the preview material. There is no visible change or detail change that can be seen when ...
Changing Child Actor Class does not update Child Actor Template
UE - Gameplay - Blueprint Editor - Sep 28, 2017WHen the Child Actor Class value is changed in a blueprint, the Template name is not updated. Note: The Settings uner the Child Actor Template dropdown DO update when the class is changed. Workaro ...
Thumbnail for blueprints with a mesh update on tick when construction script adds meshes to blueprint
UE - Gameplay - Blueprint - Jun 6, 2016Blueprint thumbnails that are updated via the construction script update on tick in the Content Browser, even when no change has been made to the blueprint. Regression (Yes) issue (does not) occur ...
Exposed variable does not appear to update when the default is changed for the spawn actor from class node
UE - Gameplay - Aug 15, 2019When updating an exposed variable for an actor being used with spawn actors from class, the exposed variable setting will not update to reflect the changes to the default setting. ...
Niagara color picker user parameter preview no longer updates until confirmation
UE - Niagara - Apr 18, 2025Starting with UE 5.4, the Color Picker Tool no longer updates preview values in real time for certain editor windows like Niagara when working with User Parameters. This behavior is a regression fr ...
If "Disable low latency update" is set to false for vive controllers a line trace appears to lag behind
UE - Platform - XR - Jun 29, 2016If "Disable low latency update" is set to false for vive controllers a line trace appears to lag behind the mesh of the vive controller. This makes it so that the line trace appears to bound and lag ...
Landscape: When updating Physic Material on a landscape layer info object, the physic material is not propagated correctly
UE - LD & Modeling - Terrain - Landscape - Apr 4, 2019This will result in not getting the Phys Material when doing collision query. Info from the UDN "Having stepped through the ULandscapeLayerInfoObject::PostEditChangeProperty I can see that the U ...
Update Mesh Section incorrectly sets vertex colors for a Procedural Mesh
UE - Graphics Tools - Modeling Tools - Jun 21, 2022This is a regression tested in //UE4/Release-4.27 CL#18319896 Update Mesh Section incorrectly sets vertex colors for a Procedural Mesh. The closer a colors R, G, or B value is to 1.0 or 0.0 the mor ...
Debug filter UI does not updated immediately when selecting a different actor instance
UE - Gameplay - Blueprint Editor - Aug 3, 2017In the blueprint editor, the Debug Filter UI does not updated immediately when the user selects other actor instances in the level. This can result in the wrong instance being listed as "(Selected) ...