Unreal Engine Issues
Unreal Engine Issues
Procedural Mesh Component 'Create StaticMesh' Function corrupts mesh tangents
UE - LD & Modeling - Modeling Tools - Mesh Editing - Oct 25, 2018After clicking 'Create StaticMesh' button on an Procedural Mesh Component, and saving the mesh, the created mesh has bad tangents. Included in the attachments, is a test project with a parallax mate ...
Reference Viewer doesn't show references to Primary Asset IDs
UE - Editor - Applied Usability - May 13, 2025Context Reference Viewer can be used to view references between assets. There is a setting 'Show Management References' whose tooltip implies that references via PrimaryAssetID should be findable t ...
Crash when a Deferred Decal (Translucent) base material has a Nanite Override (Masked Surface) Material and the mesh has Nanite + Ray Tracing enabled.
UE - Graphics Features - Ray Tracing - Aug 14, 2025A crash occurs when Nanite override material instance is used in a project with Ray tracing enabled where: 1 The Material assigned to the static mesh uses Deferred Decal / Translucent and the Nani ...
"Error: No Assets to Check In" warning when using File > Submit to Source Control on Mac SVN
Tools - Jun 2, 2016When connecting to SVN source control on Mac, I am unable to submit new assets to Source Control using the File > Submit to Source Control method or through the Source Control > Submit to Source Con ...
[MetaSounds] - Input Parameter Settings revert to the default after a MetaSound becomes virtual
UE - Audio - MetaSounds - Sep 23, 2022On restarting from Virtualizing, any parameters set previously on a MetaSound are ignored and the MetaSound restarts with the default values. This does not behave this way with Sound Cues, in which ...
Function calls inside destructor are not called when expected.
UE - Gameplay - Blueprint - Jul 13, 2015Functions called in the destructor are not being called properly. Setting a call to AddOnScreenDebugMessage is displayed at the start of PIE rather than when the actor's destroy is called. ...
Movement corrections occurring while standing still on rotating platforms
UE - Gameplay - Player Movement - Oct 5, 2022When the player is controlling a Character actor, using the CharacterMovementComponent (CMC), unexpected movement corrections will occur while standing still on a movement base that is rotating. ...
Gameplay effect modifier tag requirements are not checked for Instant/periodic effects
UE - Gameplay - Gameplay Ability System - Jun 19, 2023When creating a GameplayEffect, modifiers can tag requirements for the Source and Target tags. For Duration gameplay effects, these tag requirements are checked from FAggregatorMod::UpdateQualifies ...
AND and OR nodes evaluate second argument even if it's unnecessary
UE - Gameplay - Blueprint - Oct 12, 2015Using the AND and OR nodes in blueprints will evaluate the second argument even if the first is enough to pass/fail the condition. Using the AND node where the first argument evaluates to false sti ...
Invalid asset crashes editor
UE - Foundation - Core - Jun 7, 2017I had to force quit the editor when it was taking too long to shut down, and it appears some assets got saved incorrectly. Probably nothing that can be done about the assets being saved incorrectly ...