Unreal Engine Issues
Unreal Engine Issues
UMG Crashes When Using "Create Dynamic Material Instance" With An Optional Name Twice
UE - Editor - UI Systems - Feb 17, 2020When using an Optional Name parameter in Create Dynamic Material Instance while using the same Optional Name twice in UMG the engine crashes. I have tested this in a actor blueprint that applies th ...
Networking Engine Tests fail for NotifyParamCorrect on Client
UE - Networking - Oct 2, 2019The following errors occur when running the networking engine tests with 2 clients and a dedicated server. LogFunctionalTest: Error: Assertion failed: 'EngineTestNetActorComponent bRepArrayAddNotif ...
NavModifierVolume's FailsafeExtent is applied to the wrong area
UE - AI - Apr 16, 2020The FailsafeArea of NavModifierVolume is generated at a different location from the center of the actor when it rotated. This means that the effect of rotation is incorrect. (see attached file) W ...
MoviePipeline skipped frames using Temporal Subsampling + Time Dilation
UE - Anim - Sequencer - Jun 30, 2020The frame appears to be getting skipped entirely, but the timing for the frames on either side of them is correct, ie: if frame 10 is skipped, frame 9 and 11 still match the working case, so the ove ...
Oscillating Biquad Filter's Cutoff Frequency results in popping
UE - Audio - MetaSounds - Dec 8, 2022Reproduced 7/10 times. Issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. Additional Notes:Stacking more Biquad Filters produces a more noticeable effect, but ...
Ocean does not completely fill water zone in certain circumstances
UE - Graphics Tools - Terrain - Water - Jan 26, 2023Issue reported in [Link Removed] by [Link Removed] 1. Add one component to the 8K Landscape. [Image Removed] 2. Adding Ocean will not render correctly. [Image Removed] [Image Removed] These ca ...
[Quartz] - Playing a Force Inline SoundWave asset with PlayQuantized crashes editor
UE - Audio - Quartz - Aug 17, 2023Calling PlayQuantized on an asset set to Force Inline crashes editor:Assertion failed: SoundWaveDataPtr->GetLoadingBehavior() != ESoundWaveLoadingBehavior::ForceInline [File:D:\SMoyls_UE5_Release-5. ...
Objects animated in Sequencer fail to trigger collisions against stationary characters with character movement components
UE - Gameplay - Player Movement - Oct 22, 2024When an object, such as a cube, is animated in sequencer and that object's path intersects a stationary character with a character movement component, the object will pass through the character with ...
Datasmith - Lights imported with incorrect transforms
TM - Interoperability - May 6, 2025Reported in SF [Link Removed] In Twinmotion 2025.1.1, lights imported through Datasmith appear with incorrect transforms. Lights will appear rotated 90 degrees about the Y axis with an offset. Test ...
Allow promote to variable on Color structs/Vertex Colors structs for Procedural Mesh components
UE - Gameplay - Oct 13, 2015Issue: Currently, it is not possible to make a variable of type "Color" specifically for the color struct on procedural mesh components (see image attached). This is the only variable on procedura ...