Adjusting properties of a Blueprint instance's components in the level does not update references to the properties in the BP's Construction Script

UE - Gameplay - Components - Oct 6, 2015

Adjusting properties of a Blueprint instance's components in the level does not update references to the properties in the BP's Construction Script. Note: this would work in 4.8.3. Reproduced in 4. ...

Nanite mesh polygons disappearing when using masked opacity with vertex color in 5.4

UE - Graphics Features - Nanite - Jul 24, 2024

In 5.4.3, a nanite enabled mesh with a material that takes its vertex color (R) and uses it as the opacity mask output in a masked blend mode material, causes the mesh to have disappearing polygons ...

Animation Sharing Plugin Removes Mesh Collision

OLD - Anim - Jun 11, 2019

The referenced documentation does not state anywhere about collision being affected by animation sharing nor is the user expecting it to be affected. Even when the Collision Preset is overridden to ...

Scale with Width on Landscape Splines offsets plane mesh on Z axis

UE - LD & Modeling - Terrain - Landscape - Apr 22, 2015

If "Scale with Width" is set on a landscape spline with a plane mesh, the plane will offset on the Z axis. In most other cases, scaling along the z axis does not affect planes. ...

Reset seed on emitter looping not working properly

UE - Niagara - Dec 31, 2019

The "Reset Seed on Emitter Looping" has no effect when enabled.   Tested in: 4.22.3 CL#7053642 , 4.23.1 CL#9631420 , 4.25 CL#10868506 ...

Scaling and rotation modes of the gizmo should be disabled in Paper2D Sprite Editor for vertexes

UE - Gameplay - Paper2D - Sep 23, 2020

The modes are useless and should be disabled while the vertex(es) is(are) selected. The same behavior in Edit Collision and Edit RenderGeom modes. I've checked it in 4.25.3. Probably, this bug exis ...

Landscape Grass Foliage Instances Culling Incorrectly

UE - World Creation - Worldbuilding Tools - Foliage - Feb 20, 2017

Foliage instances are culling incorrectly and seem to cull based off of the landscape components and/or entire foliage clusters. Regression? Yes, this issue does not occur in the 4.14.3 binary rele ...

Incorrect WorldType causes crash in ULandscapeSplinesComponent::CheckForErrors

UE - LD & Modeling - Terrain - Landscape - Jun 21, 2018

When adding a sub-level that contains a Landscape and Landscape Splines to an existing Level, it will cause a crash when building the lighting.  This issue was reported in 4.18.3 (CL 3832480) and t ...

The Gradient Paint Tool In Cloth Simulation Doesn't Work On Mac

UE - Simulation - Physics - Feb 28, 2020

The Gradient Tool rotates the camera on Mac instead of painting the Gradient End Value. I wasn't able to test in Main on a Mac. There were no issues on Windows in 4.23.1, 4.24.3 and 4.26 Main. Foun ...

Setting multiple identical actors to replicate movement will crash on PIE with multiple players

UE - Networking - Jan 28, 2015

If ten or more of the same actor in a level have the "replicate movement" checkbox set to true, the editor will crash on PIE if the number of players is set to 2 (or with 1/2/3 players if dedicated ...