Unreal Engine Issues

Level Instance: failed check in duplication code when embedding

Mentioned in this UDN is the possibility that duplication of some actor fails because their BP as been deleted.  ...

TriggerMontageEndedEvent will clear queued notifies for all instances of a montage

When a montage finishes and TriggerMontageEndedEvent is called, all queued notifies for that montage are cleared. However, this assumes that there is only one instance of the montage active at any ...

InstanceDecorators of URichTextBlock is increased everytime add it to viewport

URichTextBlock::UpdateStyleData() does not check whether DecoratorClasses already had any specificed DecoratorClass. So every time you turn UMG on and off from the Viewport, Decorator Classes will i ...

Background blur missing with HDR CompositeMode 1

UPD: According to Affects Version field, issue reproduces in 4.26, Regression for 4.27 - No. ...

Movie Render Queue does not render letterboxes to exports with sensor aspect ratios between 16:9 and 1:1

There is a discrepancy between how Movie Scene Capture (Legacy) and Movie Render Queue handle letterboxing for sensor aspect ratio's that do not match the export resolution, which seems to be a bug ...

Forward Rendering MSAA causes black outlines of meshes when partially occluding Sky Atmosphere

Single Frame Blendspace doesn't sample root motion

Single Frame Blendspace nodes don't correctly sample/generate root motion. The reason for this is because of how we calculate the delta to bump the sampling within the blendspace each frame. In a ...

[CrashReport] TBaseSPMethodDelegateInstance<0,SMenuEntryBlock,0,EActiveTimerReturnType ,FDefaultDelegateUserPolicy

Generated from CrashReporter likely the same issue - [Link Removed] but hasn't been brought over to UE5 EA ...

Frame Times in section structs are not converted with changing the sequence's tick interval.

When changing the tick interval of the sequence, frame values stored on structs are not converted.  ...

Datasmith gltf importer does not read framerate from the file

I'm importing glb or gltf files via the data prep tools but I can't find an option to set the animation fps. It defaults to 30 fps. (it doesn't matter which fps my exported animation has) Is there ...