Unreal Engine Issues
Unreal Engine Issues
SKP Import - Materials for certain groups appear black in Path Tracer when using Keep Hierarchy
TM - Interoperability - Mar 3, 2025Reported by a client in SF [Link Removed] When importing SKP files using the Keep Hierarchy collapse mode, some imported objects in Groups inside SketchUp will appear black in Path Tracer. Appears ...
BSOD when launching Twinmotion on NVIDIA 50-series GPUs with 576.02 Drivers
TM - Rendering - Apr 22, 2025Reported from multiple users. NVIDIA RTX 50-series GPU users are reporting BSODs when attempting to launch Twinmotion with the latest drivers installed. The crashes occur on the 576.02 driver versi ...
Landscape UI Elements are not visible
UE - LD & Modeling - Terrain - Landscape - Oct 4, 2016Per conversation between Gareth and Mike, it was determined the Landscape tool is in Game Mode by default. Within the Landscape Tool, all UI elements are disabled by default. This has been observed ...
Disable runtime crash processing allocating too much memory
UE - Foundation - Core - May 26, 2015User has included logs within his AnswerHub post. Spoke with Jarek S. regarding the crash reporter issues he's experiencing, Jarek has requested Jiras: "Allocating like crazy is caused by the run ...
Hot reloading changes to a struct causes data table assets to break
UE - Gameplay - Mar 28, 2017If a data table asset is based on a custom struct, making changes to and hot reloading the struct will not update the data table in the editor. Restarting the editor will prevent the data table fro ...
Copy/pasting component results in broken duplicate component (named _GEN_VARIABLE)
UE - Gameplay - Components - Jul 28, 2017REGRESSION: Yes. Does not occur in 4.16.3 Using Copy/Paste to duplicate a component will result in a broken duplicate component. This doesn't occur if the user uses Ctrl+W to duplicate. On compi ...
Level Sequence option "Allow Level Edits Only" causes Frame Rate drop when used
UE - Anim - Sequencer - Aug 15, 2017When using the new option "Allow Level Edits Only" there is a drastic frame rate drop while playing the sequencer. This frame rate drops when only using this option. Versions Tested: 4.16.3 - CL: 3 ...
Crash When Toggling Visibility of Level with Planar Reflection
UE - LD & Modeling - Terrain - Landscape - Mar 26, 2018This crash occurs in 4.19 and 4.20 but not 4.18. Repro'd in 4.19.0-3944462 and 4.20.0-3955769 and 3964322. This is a regression. Per UDN licensee: When I'm showing/hiding levels in editor (in le ...
Behavior Tree has missing Service Nodes on project load
UE - AI - Dec 4, 2018In the project is Behavior Tree that implements some tasks, decorators and services, but for some reason, two of my tasks nodes gets initialized with all the pointers to their services set to null, ...
Compile error when Blueprint Interface returns a map type variable
UE - Gameplay - Blueprint - Feb 26, 2019A Blueprint Interface function that returns a map type variable will fail compiling with various errors when called in another Blueprint. If the same function is setup in the Actor Blueprint instead ...