Unreal Engine Issues
Unreal Engine Issues
[UDN-19505621] Hide Selected At Startup Issue
UE - Editor - Workflow Systems - Jun 10, 2025From [Link Removed]: 你好，我发现这里的选项有一些工作逻辑不一致，提一个改进建议： 当手动隐藏Actor小眼睛图标的时候，设置Hide Selected At Startup 是无效的，这具有很大的误导性，而其他任何情况下，工作都是正常的，比如： 1.小眼睛隐藏+Show All At Startup 2.小眼睛隐藏+Show Selected At Startup ...
[AI] Changing NavMesh Resolution in config file does not update the quantFactor of existing navmesh
UE - AI - Navigation - Aug 6, 2025When we changed the resolution in the config, if you open a map and then look at the navmesh, the resolution it shows is the updated one from the config (assuming you haven't overridden anything) ...
Editor Crash when trying to get Color data from Vertex buffer
UE - Graphics Features - Nov 6, 2019When attempting to get the vertex color of an instance of of a static mesh that is painted after placing it in the World Viewport. The Editor crashes returning an "Unhandled Exception". The cause o ...
NPC - Does not get updates from Material Parameter Collection changes in the editor
UE - Niagara - Sep 30, 2024When an MPC is selected as the Source Material Collection for an NPC, all of its current parameters are carried over to the NPC with their current values. After that, if parameters are added to, rem ...
Preview Rendering Levels Do Not Display Supported Optimization Viewmodes in Viewport Dropdown
UE - Platform - Mobile - Apr 2, 2019When attempting to set an optimization viewmode while using a Preview Rendering Level other than Shader Model 5, the Optimization Viewmodes dropdown is missing all of its options and instead display ...
The engine crashes when adding a new brush at newly created level by a specific way.
UE - LD & Modeling - Modeling Tools - Mesh Editing - Jun 17, 2019issuesFBSPOps::csgAddOperation returns null if BuilderBrush has no valid polys.The creating level on content browser never calls "UEditorEngine::InitBuilderBrush(NewWorld);". But "New level" button o ...
PCG sampling of RVT does only works when sampling the first texture layer
UE - World Creation - Procedural Tools - PCG Component - Dec 11, 2025The logic for selecting a page table texture in FVirtualTexturePageTable::Initialize() uses the indexing for texture layers (index 0-7) to fetch from the page table textures (index 0-1). All RVT for ...
An imported file that resides within the project's folders gets a relative path. That path is not updated it you copy the uasset to another folder. That breaks the Reimporting functionality.
UE - Editor - Content Pipeline - Import and Export - Aug 28, 2024An imported file that resides within the project's folders gets a relative path. That path is not updated it you copy the uasset to another folder, so from the location of the new asset's the relati ...
Crash when adding Actor Array Element to a Sequencer Event Struct
UE - Anim - Sequencer - May 25, 2017Crash when adding Actor Array Element to a Sequencer Event Struct Error message: Assertion failed: 0 [Link Removed] [Line: 56] Source Context: 42 N = FName(*StringName); 43 ...
Users can't change flags on asset entries in PSD when the asset was added via a Branch In notify
UE - Anim - Gameplay - Mar 19, 2025Assets added to a PSD via a Branch In notify can't have their flags changed within the database. When the flags (like mirror, disable, etc) are changed, they revert back to the original value when ...