Unreal Engine Issues

FDateRange cannot be declared as UPROPERTY

Unlike other range wrapper structs, such as FFloatRange, marking a FDateRange as a UPROPERTY results in the following error: error : Unable to find 'class', 'delegate', 'enum', or 'struct' with nam ...

Direct Link is not finding source - macOS Sequoia

Direct link with macOS Sequoia seems to be broken as Twinmotion cannot detect the Direct Link source, it seems the data is properly written in the cache directory. ...

Mobile Deferred Shading enabled and Preview Level Android Vulkan will crash the editor

LogAssetRegistry Error produces a path error when referring to assets on a junction/hard link/soft link

IAssetRegistry::GetChecked().ScanPathsSynchronous() now eventually calls FPathExistence::LoadExistenceData and logs the errorFPathExistence failed to gather correct capitalization from disk for <p ...

Join in progress clients won't receive that a net startup actor is hidden

This seems to be because IsNetRelevantFor checks if the actor is hidden, resulting in a hidden actor not being considered relevant to clients. However, if it is a net startup actor, this will result ...

FNetGUIDCache warning when attaching non-replicated component to a replicated scene component

When the replicated scene component's AttachChildren array is replicated, the package map attempts to serialize the non-replicated component, causing the warning that the object is not supported. ...

Lightmap UV generated on Windows and Mac is not deterministic

Default subobject of dynamic component skips initial replication

Because the component's subobjects are replicated before the component, the content block for the subobject is received before the component has been created on the client. Since this subobject is c ...

Subsurface Scattering Checkerboard with SceneColourFormat 3 (High Scalability) leads to a visual artefact when temporal upscaling is in use

Primarily visible at very low internal resolutions (25-33%), the SSS checkerboard with an RGB scene colour format (r.SceneColorFormat 3) causes a double-image artefact both internally and on the sil ...

'prefix parameter names' checkbox in a material function's settings does nothing.

Prefix Parameter Names checkbox does not work as expected, and the Group names are unmodified. The value "UMaterialFunction::bPrefixParameterNames" does not appear to be used anywhere in the Engine ...