Unreal Engine Issues

Certain Niagara particles can disappear after switching to the debug cam

When duplicating multiple actors with alt+drag, Translation/Rotation widget goes to incorrect coordinate space

Note: This bug has been observed in all tested engine versions, from UE 4.24 to UE 5.3 and in ue-main. When shift+selecting multiple actors in the Level Editor, the currently-active transformation ...

RenderTrace fatal error, shader expected a uniform buffer at slot 1...

RenderTrace plugin does not appear to have been updated for a change that moved the GPUScene out of the View buffer to its own uniform buffer. (CL 24027890) The test project is based on FirstPerson ...

Recent change to Material Expression code missing a case for "exp2" function in switch (cpp)

The function "FMaterialDerivativeAutogen::GetFunc1ReturnType(...)" does not have a case for "EFunc1::Exp2". Also found in Release-5.4, CL: 331987674 ...

FNotifyNodeInterface crashes when referenced Notify is invalid

Currently FNotifyNodeInterface directly references notifies that live within the related anim sequence.  This can cause intermittent crashes when notifies are removed as the UI can still reference t ...

GameFrameworkComponentManager crashes when modifying init state callbacks during state change

The GameFrameworkComponentManager has a system for registering callbacks to execute in response to event changes. This ends up calling UGameFrameworkComponentManager::CallFeatureStateDelegates which ...

iOS Quick Launch from the Editor no longer starts the app on device

For some reason, iOS apps no longer launch on device when using QuickLaunch within the Editor.  Instead, it does install the app onto the device, but when it attempts to then launch the app, a messa ...

Foliage 'BlockAll' instanced static meshes do not affect NavMesh

When placing static mesh foliage and setting the foliage mesh's Collision Preset to Block All,  the placed meshes do not consistently block parts of the nav mesh. Expected: Placed meshes (for examp ...

MMB clicking on a track in the sequencer will copy/paste your current frame to that time, but that action doesn't recognize snapping (it'll end up on a subframe)

[Link Removed] ...

Can't inherit from ALight without a linker error

This is a regression from 5.3. It should be possible to inherit from ALight outside of the engine module without any sort of errors. Case: [Link Removed] ...