Unreal Engine Issues

4.23 UpdateGrass took twice time than 4.22

Memory leaks at changing lighting scenarios

The engine does not free the LevelRenderAssetManagers array elements in FRenderAssetStreamingManager when changing lighting scenarios. Following code can avoid this issue. void FRenderAssetStre ...

Changing the Resolution scale in Engine scalability can cause actors to be offset when ejected from the player controller

If the user turns down the Resolution scale, plays in editor, and then ejects from the currently controlled pawn The actors in the scene will be hard to click on because they appear to be offset fro ...

Niagara: Losing focus when editor is open

Reported by a user from Reflector. ...

InstanceOnly UProperties accessible in Blueprint

Reproduced 3/3 times. Issue does not occur in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed Regression. ...

Widget interaction component appears to stop working after entering a physics volume

Widget interaction component appears to stop working after entering a physics volume. A Physics Volume appears to deactivate the Widget interaction component ...

UV Flipping Mode Causes Stretching of Particles

If "UVFlipping Mode" under Rendering on the Required node of an emitter is set to anything other than "None," the particles can become stretched and distorted. As a workaround, I have discovered th ...

Adding HISMC instances resets wind for all existing instances

When adding new HISM instances, actors using SpeedTree -> WorldPositionOffset material are reset. 4.19 Repro project provided by user. I was unable to get WPO wind working in 4.18, I did noticed th ...

Foliage: Speed tree wind is reset for every add/remove/update on instances

Foliage: Speed tree wind is reset for every add/remove/update on instances What is happening:When we invalidate the render state, proxy are recreated, causing the wind to be removed and add again, ...

Ensure condition failed: Play an animation in the finished animation event called from UUserWidget::StopAllAnimation

If a widget has playing animation node in finished animation event, calling StopAllAnimations appends a new UMGSequncePlayer to ActiveSequencePlayers array during array iteration and cause ensure co ...