Unreal Engine Issues
Unreal Engine Issues
Unexpected Collision Response When Nesting Primitive Components with auto-weld enabled and physics disabled on children. The root primitive falls through floor even though it is set to block all.
UE - Simulation - Physics - May 27, 2025Context Auto-weld makes it so if a child is attached to a parent, the two bodies will be joined into a single rigid body. Physic settings like collision profile and body settings are determined by t ...
LIVE: Static BlueprintCallable function crashes in standalone mode
UE - Gameplay - Blueprint - Oct 29, 2014If the user creates a BlueprintCallable static function the editor will crash when playing in standalone mode. If the function is not static the node will have an additional pin and Blueprint will n ...
Odd behavior when moving a large number of assets
UE - Editor - Content Pipeline - Content Browser - May 18, 2015User is experiencing his PC running out of memory when he does large move/copy operations in the content browser. There are a few issues with this process. The first is that attempting to drag any ...
Cursor breaks viewport when using Widget Render Transform Scale
UE - Editor - UI Systems - Mar 14, 2017The viewport cursor will continue to display off of the actual viewport until the widget ends if the border component actually extends. This has not been tested with any other template. Regression ...
MoviePipeline: Python Editor example can double-up objects in-scene
UE - Anim - Sequencer - Jan 4, 2022See the UDN for sample project. This is caused by the Editor Python sample not using the UMoviePipelineQueueSubsystem, which (when rendering) blocks the Sequencer from auto-binding to PIE. The fix ...
DFAO on Landscape causes outline against horizon
UE - Graphics Features - Apr 21, 2017https://udn.unrealengine.com/questions/359241/is-it-possible-to-turn-off-distance-field-ambient.html DFAO creates a horizon outline at great distances against lighter colored skies. [Link Removed ...
MDL imported from Substance Source with Datasmith causes a crash
UE - Editor - Content Pipeline - Import and Export - Mar 8, 2019MDL downloaded from Substance Source causes a crash. This is reported on UDN by an Enterprise customer: https://udn.unrealengine.com/questions/487598/why-would-ue4-is-always-crashing-when-import ...
inherited gameplay tags no longer work
UE - Gameplay - Jul 3, 2020Added and Removed tags are cleared in inherited gameplay tag containers. This came from the following UDN: https://udn.unrealengine.com/questions/587982/ue-master-tags-in-finheritedtagcontainer-do-n ...
HoloLens auto-enabling as a supported platform in 5.1
UE - Platform - XR - Mar 30, 2023https://udn.unrealengine.com/s/case/5004z00001n9MUWAA2/hololens-cannot-be-permanently-disabled-as-a-target-platform?fromCase=1 They disable hololens as a supported target platform, but it is enab ...
When PackedLevelActor is placed across navtiles, navmesh is incorrectly split and generated in navtiles
UE - AI - Navigation - Feb 28, 2024When creating a PackedLevelActor by packing multiple StaticMesh, the navmesh isn't generated correctly on top of it. In detail, navmesh is generated by splitting on navtiles. This is probably due to ...