Unreal Engine Issues
Unreal Engine Issues
Running Automation Test for Directory Watcher Causes the Editor to Crash
UE - Automation Test - Nov 2, 2015Running an automation test for Directory Watcher for Plugins causes the editor to crash on the Simple Modify step. Occurs only in 4.10 Preview 3. Regression: This does not occur in 4.9.2, but occu ...
Transition Screen Size does not affect LODActors
UE - World Creation - Worldbuilding Tools - HLOD - Nov 18, 2016Transition Screen Size doesn't seem to affect when LODActors are added to the level. This was occurring before Dev-Framework's merge into Main at CL 3198987. ...
Crash when editing gameplay tag query in a structure
UE - Gameplay - Blueprint - Feb 20, 2017When I try to edit Gameplay tag query in a blueprint structure the editor crashes. Regression: No. This issue affects versions: 4.15, 4.14.3, 4.13.2 (Binary Versions) ...
Deactivating a shot section from scripting does not affect evaluation
zComponent - Archive - Jun 23, 2021Disabling a shot from scripting will not affect evaluation of the sequence. ...
RetargetSource in AnimSeqeuence doesn't affect DDC key
UE - Anim - Runtime - Aug 4, 2020Retarget source doesn't affect DDC key, so it causes incorrect result. Changing the anim sequence DDC key generation to include it fixes this issue. ...
Tilemap using Masked Lit Sprite Material not Rendering in Standalone mode
UE - Gameplay - Paper2D - Jan 26, 2016When using a Tilemap with a Masked Lit Sprite Material, the tilemap will not render while in Standalone. In the test project, the Paper2D Blueprint character was switched to Masked Lit Sprite Materi ...
UPlacementSubsystem does not respect AssetFactories priorities, which is inconsistent with UEditorEngine::ActorFactories and makes it impossible to override placed actor type when dragging asset from Content Browser to Level Editor Viewport.
UE - Editor - Workflow Systems - Mar 30, 2026Note: This issue was reproduced in UE 5.7, and it works correctly in UE 4.27. Prior to CL 24938100 (between UE 5.1 and 5.2), all existing factories were discovered and registered during engine init ...
Play Rate does not affect audio tracks
UE - Anim - Sequencer - Dec 30, 2016Play Rate does not affect audio tracks. Slowing the play rate also causes the audio tracks to repeat with an offset. Note: This is working straight from a Sound Wave. If you use a sound cue, the ...
Cloth simulation breaking after scaling > 10
UE - Runtime - Simulation - Jan 4, 2023Reproduced 3/3 times, issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. Simulation appears to work fine when scaled by 10, but any higher and it starts to mis ...
Cannot manipulate morph targets unique to Slave Component through Master Component
OLD - Anim - Apr 1, 2016Cannot manipulate morph targets that are unique to the Slave Component through the Master Component. So the situation here is that the Head(Master) does not have the "BeerBelly" morph target, but t ...