Unreal Engine Issues

Crash on draw material to rendertarget

This crash has started occurring in 4.15.2. It seems to be a regression from 4.15.1. ...

CLONE - Crash on draw material to rendertarget

This crash has started occurring in 4.15.2. It seems to be a regression from 4.15.1. ...

Crash when adding Emitter in parameters in Niagara

When adding an emitter to a Niagara System, in 4.20 Preview 1, the Editor freezes up and crashes. ...

Copy Pose From Mesh Node Does Not Preview in Sequencer

Copy Pose From Mesh node does not affect the animation when previewing in Sequencer. This works when played in the editor. ...

Console is off screen in VR preview when windows scaling is set to 150% or above

Windows scaling appears to affect the HMD if the project is open on a screen with window scaling being used. ...

Significant editor slowdowns when moving blueprinted actors while having a different complex blueprint open

A Blueprinted actor's construction script time can be affected by the complexity of an opened level Blueprint. ...

Result pin of Cast Node of ControlRig can not break

In UE5.1, the Result pin of the ControlRig cast node could be broken, but it cannot be broken from UE5.2. ...

Simulate motion vectors can fail on camera cuts

r.MotionVectorSimulation 1 should simulate motion vectors when cutting cameras, but this appears to be broken on some loops. ...

Rect Light Texture does not unload during level streaming in packaged game

UE5.6+ - Mutable - IDPrefix crash when combining Child Objects, Add to Mesh Component and Extend Mesh Section.

So the issue seems to be a combination of Add To Mesh Component and Extend Mesh Section. I've tried this in Epic Launcher 5.6, 5.6 in-house modified engine as well as ue5-main 5.7 from git (editor ...