Unreal Engine Issues

Slow response on clicking on InstancedStaticMeshComponent with many elements when using IME

When clicking on InstancedStaticMeshComponent with many elements, Editor memory usage increases and editor freezes until the operation is finished. The wait and memory usage get much worse when usin ...

Red 'X' gets displayed for stationary light in blueprint editor

Stationary light in a blueprint gets displayed with red 'X' in Blueprint Editor viewport after opening the blueprint for the second time. ...

Crash on opening a pose asset after reloading a skeletalMesh with bone name changes

Opening an old pose asset can crash the editor if the skeleton it uses gets updated. ...

InputChord "None" replaced with "Any Key" on reopen

For the FInputChord struct, in Blueprints assigning the value "None" to Key will be reassigned to the next time the Blueprint is opened. This is problematic for handling key bindings in Blueprint w ...

Parent Construction Script executes on child when disconnected

If you create an Actor with Construction Script logic and create a child based on that Actor the Parent Construction Script is being executed even after disconnecting the node. ...

SceneCaptureComponents do not respect changing visibility or hidden in game for their preview mesh

PostProcessMaterial is not applied to NiagaraEditor preview

PrecomputedAOMask cannot be used when Virtual Texture is enabled

The problem is that when the VirtualTexture lightmap is enabled, the value returned by the material node's PrecomputedAOMask is incorrect. ...

AREnvProbe - App crash on iPad if automatic environment capture is enabled

This crash does not occur on iPhone devices. Tested on an iPhone X device. When switching environment capture to manual for iPad, the crash did not occur. ...

Normals and Tangents cannot be load correctly when re-importing Skeletal Mesh

This problem started in 4.24 and not in 4.23. CL 9114926 seems to be relevant. ...