Unreal Engine Issues
Unreal Engine Issues
Most variable types that do not reference a specific Actor in the level cannot have defaults set in Structs
UE - Gameplay - Blueprint - Feb 7, 2015Most variable types that do not reference a specific Actor in the level cannot have defaults set in Structs. While this makes sense for Actor references, I don't see why a Struct couldn't reference ...
[3ds max] Some geometry will display in all black in Path Tracer renders
UE - Editor - Content Pipeline - Datasmith - Exporters - Dec 12, 2025Reported in SF [Link Removed] Some geometry from 3ds Max will display as all black when viewed in Path Tracer rendering. This effect is visible in both UE and Twinmotion. This was tested with Data ...
Crash: Changing Material Property Overrides of Material Instance
UE - Graphics Features - Dec 14, 2016When a material has a static bool parameter AND this is overridden in a material instance, Trying to change Blend Mode or Shading Model under the Material Property Overrides crashes the editor. Thi ...
OnComponentBeginOverlap and EndOverlap are called multiple times when moving in a Skeletal Mesh component's collision
UE - Simulation - Physics - Jul 7, 2015OnComponentBeginOverlap and EndOverlap are called multiple times when moving in a Skeletal Mesh component's collision. This does not occur with a Static Mesh's collision. Test project available her ...
Collision Drawing in Cooked Builds (Development) doesn't Show Geometry for Nanite Meshes
UE - Graphics Features - Jun 2, 2025Context The showFlag.CollisionVisibility 1 cvar is a viewport visualization mode that highlights which Actors will block visibility. The showFlag.CollisionPawn 1 cvar is a Player Collision viewmode ...
Rendering out PNG Sequence from Matinee yields Transparent PNGs
Tools - Mar 30, 2015When rendering a movie out as a PNG sequence, the PNGs are all rendered with Transparency and require the addition of a Black layer before the frame can be viewed as in the Matinee. Went back and t ...
Ctrl+Dragging multiple pins at once will sometimes drop pins
UE - Gameplay - Blueprint - Oct 7, 2016Ctrl+Dragging multiple pins at once will sometimes drop pins This is a regression. The same setup was working in 4.12.5, but isn't working in 4.13.1 & Main (4.14) User Description: Blueprint conn ...
"Convert to Blueprint" removes ability to edit component properties
UE - Gameplay - Blueprint - Dec 4, 2018As noted by the user in the linked UDN question, this seems to be a problem with the PointLightComponent property on APointLight not having the VisibleAnywhere property descriptor. Also as noted, th ...
Execution reroute nodes become wildcard reroute nodes when creating a second reroute node off the same execution pin
UE - Gameplay - Blueprint - Sep 21, 2015Execution reroute nodes become wildcard reroute nodes when creating a second reroute node off the same execution pin. Note: this does not appear to affect their functionality as execution reroute no ...
When using All Nearby Spawned Actors, the number of recorded animation frames is not enough.
UE - Anim - Sequencer - Jul 21, 2021The licensee wants to record the same number of frames as the animation in "Content/TakeRecorder_test/Grayman/anm/". I thought that increasing the number of frames by 1F on Sequence would solve the ...