Unreal Engine Issues

Overlap End/Beings when setting actor location

In the provided example. The player's position is set on tick. This causes the overlap for the collision sphere being used to determine if the hands of the player are overlapping a surface to repeat ...

Editing Instanced Subobjects on a Parent BP may change unrelated Instanced Subobjects on a Child BP

Child Blueprints with instanced subobjects inherit changes made by the Parent Blueprint's instanced subobjects, regardless of what property they are assigned to. Tested in 4.18.3 (CL - 3832480), ...

Incorrect box collision on negatively scaled mesh

If you have a mesh with a rotated box in its simple collision primitives, that box won't be in the correct position if you scale the mesh by -1. This issue was reported in 4.20 (CL-4212847) and rep ...

[Feature Request] Set Overridden Light Map Res

Set Light Map resolution via Blueprint or Python ...

[ CATIA ] Datasmith Error importing part from CATIA v5

When importing the attached CATIAv5-file Screw.CATpart via Datasmith, The following error is recieved: LogDatasmithImport: Warning: Failed to import '../../../../../../Screw.CATPart'. Failed to cre ...

Create Blocking Volume from multiple selected Staticmesh actors in viewport generates messed volumes

The result unexpected: The collision volume shape generated was just strange and much bigger than it should be Expects: The collision volume generated should wrap up group of actors and right fit t ...

Struct Boolean value can be changed when using a Set node for the struct in Blueprints

If a struct has a property with the EditCondition meta after a Boolean property that is set to the Boolean property, this Boolean property will be changed inadvertently when a Set node is used for ...

Cascade ParticleRelativeTime Outputs Constant 0 on Mobile

Cascade ParticleRelativeTime outputs constant 0 on mobile. Found in 4.19 CL# 4033788, 4.20 CL# 4302132, 4.21 CL# 4321618 ...

Mesh merge instancing can swap material ID

Can change type of event dispatcher in Blueprint

It seems that with 4.20 users are able to change a dispatcher's type from Multicast Delegate to something else (float, int, etc.) Doing so will cause any node that references the dispatcher via call ...