Unreal Engine Issues

Non-deterministic packaging when iostore is enabled

There appears to be a pattern of non-deterministic cooks when packaging with multiple chunks. In the case of these reproducible steps, only the assets of chunk1 have been modified. In this case, we ...

UProperty meta ShowOnlyInnerProperties doesn't properly propagate through UStructs

ShowOnlyInnerProperties does not work when a UStruct is embedded inside another UStruct ...

Chaos Clothing CreateClothActor takes a long time with LODs and Self-Collision

Spawning an actor with Chaos cloth causes a hitch when LODs or Self-Collision are enabled on the cloth. LODs and Self-Collision seem to compound the issue. Self-Collision requires a collision simul ...

[Attenuation][Spatialization] - If speaker output is set to stereo, the Surround 2D Non Spatialized Radius Mode doesn't generate any audio

If Surround 2D is set as the Non Spatialized Radius Mode, there is no fallback option if the user's output is not a surround format (eg stereo). There is also nothing communicated in the Tool Tip. ...

Packed level actors have wrong transform in cooked builds when created from attached actors

RHIGetAvailableResolutions returns duplicate entries when bIgnoreRefreshRate is false

When the RHIGetAvailableResolutions function fills the array that is passed in as the first argument, it will end up filling some slots with duplicate resolutions (including refresh rate) when the b ...

Duplicated blueprints lose components

Blueprints that have been updated from previous engine versions lose components if duplicated. The original blueprint retains all components but all duplicates lose them. ...

SetMasterPoseComponent overrides any SetMorphTarget operations

Using Set Master Pose Component overrides any Set Morph Target operations on the slave component. ...

Preview Instance can still trigger print strings when you PIE

In the given answerhub example, the user has a print string coming from IsNotValid on a check of *TryGetPawnOwner*. This is returning a false negative to him when he PIE's because the Preview insta ...

Can only preview one camera from a Blueprint actor in the level viewport

Selecting a blueprint with a camera in it will allow you to preview the camera, but if your blueprint has more than one camera you can only preview the highest one in its heirarchy. With the abilit ...