Unreal Engine Issues

Mobile Preview -> AutoLandscape Material broken if created in 4.22+

Landscape Layers created in 4.22+ revert to default material in Mobile Preview. Confirmed in MAIN at CL 9730599 ...

AllowCommandletRendering D3D12 device crash

Distance Field shadow culling when view is at certain angles

Distance Field shadows are culled for larger meshes at certain angles of the cameras view position. Map with reproduced setup is attached. ...

Planar Reflections on Mobile short view distance for non single plane faces

Planar Reflections on mobile work well with single plane assets but not with anything with multiple sides, like a box. Tested in: 4.12.4 CL-3028348 4.13 Dev-Editor CL-3038075 ...

Component properties cannot be edited for instances of a Blueprint if more than one instance of that Blueprint in the level is selected

Properties of components that are added to a Blueprint cannot be set in the Details panel for instances of that Blueprint in the level if multiple instances are selected. These components also do no ...

OnHit not firing when capsule collider passes onto very close and same height mesh

When a capsule collider passes from the top of one piece of geometry to another that is very close the OnHit event doesn't fire. I have attached a project that demonstrates the issue in 4.23. A vid ...

Renaming a level by WorldPartitionRenameDuplicateBuilder fails if the level contains GroupActor with non-spatial actors

Referece to the source level should be fixed by FReplaceObjectRefsArchive, but it is not working because ArIsModifyingWeakAndStrongReferences is not set. It can be fixed by setting the flag.class FR ...

Sequence with restore state set is causing a "Fatal world leaks detected" crash

We recently had a few occurrences of crashes caused by a "Fatal world leaks detected" error when unloading a level (in a packaged game and in editor). I tracked down what was keeping a references t ...

'Is Case Sensitive' option on the Switch on String node doesn't toggle correctly

'Is Case Sensitive' option on the Switch on String node doesn't toggle correctly. User Description: The "Is Case Sensitive" option when you use a switch on string function in blueprint doesn't wor ...

FVoiceSerializeHelper doesn't add references to AudioComponent instances

"FVoiceSerializeHelper doesn't add references to AudioComponent instances" ShooterGame crashes when following the repro steps provided by the licensee, listed below and on the UDN post. Crash image ...