Unreal Engine Issues

GeneratePsyms fails with installed builds due to missing dymp_syms tool and incorrect path space handling

Uncovered while testing [Link Removed] ...

Inaccurate motion vectors when using different position binding in renderer

Even though the particles are not moving, and the velocity is zero, the output motion vectors are non-zero. This seems to only happen if using two sources of particle positions.  ...

Niagara - When Interpolated Spawning is disabled, the first frame of each particle unexpectedly does not take into account the Particle Update stage

Foreword: Even if the behavior described here is by design, it is rarely (if ever) expected or desired. This was discussed and agreed to be treated as a bug. Explanation below. When interpolated sp ...

Packaged iOS project incorrectly includes level not selected to be cooked

When packaging for iOS on a Mac, the default level for a project will always be included in the packaged project even if it was not selected to be cooked and packaged. The expected behavior is that ...

Character sliding down a surface can prematurely land before reaching a walkable floor

Under some circumstances, a character falling and sliding along a sloped surface may get hung up near the bottom of the surface before actually landing on the floor.  This seems to occur when slidin ...

Max Pitch Angle does not correctly apply when utilized in procedural foliage volumes

Random Pitch Angle does not properly apply when called within a procedural foliage volume. ...

FPackedRGBA16N is divide by 32768 twice in NEON/FPU

Sub-components with the same name are not displayed on the correct parents in the Blueprints editor

Sub-components with the same name are not displayed on the correct parents in the Blueprints editor.  Upon creation of an Actor blueprint initially derived from a c++ base class (VRCharacter) which ...

If a function that takes a custom struct as a parameter is changed and a hot reload performed, any variables in Blueprints that are of that custom struct type will disappear and no longer be usable.

After creating a custom struct in C++ and adding a variable of that struct type to a Blueprint, hot reloading a code change that involves altering a function that takes the struct as a parameter res ...

Custom Primitive Data types do not work with Procedural Meshes even though the option exists in their Details Panel

This is a not a regression. Tested in UE5(Binary), UE4(Binary), and UE5 Main(P4). Procedural Meshes have the option for CPDs listed in their details panel under Rendering > Advanced >Custom Primit ...